Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering

Session: Materials Engineering

89 articles
Proceedings Article

Study on Measurement Method of Material Elastic Index

Yanxia Wang, Hai Yun, Tiantian Sun, Qinghui Shang, Yongli Bao
Elastic index is the required important parameters in the theoretical analysis and design calculation of components. Mechanical testing method and electrical measuring method are commonly used in engineering mechanics experimental. This article discusses the ultrasonic method which is used to measure...
Proceedings Article

Exploration on Thermal Shock Mechanical Properties of Ceramic Materials

Yanxia Wang, Tiantian Sun, Qinghui Shang, Yongli Bao, Xiaomin Ma
Fatigue failure is very common phenomenon in engineering field, and fatigue problem is more and more prominent with the development of modern social production to high speed, high temperature, high strength load. In process of college undergraduate course graduation design and innovative experiments,...
Proceedings Article

Influence of Quenching Temperature on Microstructure and Properties of Cr5 steel

Ya-sha Yuan, Wen-yan Wang, Jing-pei Xie, Kai-hui Xu, Hao-yin Zhang, Ai-qin Wang, Luo-li Li
The microstructure (before and after quenching), phase (before quenching), carbide content and hardness were studied by scanning electron microscopy, X-ray diffraction, optical software and Rockwell hardness tester. The results indicate that carbides of Cr5 steel have different morphology features and...
Proceedings Article

Progress in Fabrication Technique of Carbon Nanotubes Reinforced Al Matrix Composites

Chun Wu, WenXin Ma, YaPing Chen, Chen Yan Liying, Jing Li
The carbon nanotubes and carbon nanotubes reinforced aluminum matrix composite materials was described, the basic characteristics about carbon nanotubes preparation methods of aluminum matrix composites and preparation process problems and solutions. Finally, the carbon nanotubes reinforced aluminum...
Proceedings Article

Experimental Study on Influence of Slurry Concentration on Gel Time of Double Liquid Grouting Material

Yanfang Li, Hongliang Huang, Sulan Li
The selection of cement slurry with different consistency and different concentrations of Sodium silicate, design and test research on the mixture ratio of cement-Sodium silicate grouting material, 4 W/C and 4 0Bé co design 16 groups of proportion, through the collation and analysis of experimental data,...
Proceedings Article

Experimental Study on Influence of Baume Degrees on Double Liquid Grouting Material’s Consolidation Strength

Yanfang Li, Hongliang Huang, Pingyin Yang
In the premise of selecting different consistency of cement slurry, deploy different concentrations of Sodium silicate, design 16 groups of ratio, design and test research on cement and Sodium silicate double liquid grouting material mixture ratio, through the collation and analysis of experimental data,...
Proceedings Article

Isothermal crystallization kinetics and morphology of nanodiamond/polyphenylene sulfide composites

Shuling Deng, Chongmin Du, Hubin Lin, Jianyi Zhu, Zhidan Lin
Nanodiamond (ND) as a filler material provides a nucleation effect on polyphenylene sulfide (PPS) and promotes its crystallization. The effects of ND on crystallization behavior and kinetics of composites were investigated by DSC. The results show that ND acts as an nucleating agent for PPS to accelerate...
Proceedings Article

Interface bonding performance of CuW alloy coating on Cu substrate

Jiliang Zhang, Fei Wang, Jie Yan, Yonghua Gu, Kaiyong Jiang
In this paper, CuW alloy is successfully coated on copper substrate by microwave sintering. A wedged load test and scanning electronic microscopy (SEM) are employed to investigate the interface bonding performance. The results show that the CuW coating bonds firmly to the copper substrate without any...
Proceedings Article

Analysis of Facet Temperature Distribution of Semiconductor Lasers

Tiansheng Zhao, Zaijin Li, Te Li, Peng Lu, Yi Qu, Baoxue Bo, Guojun Liu, Xiaohui Ma, Yong Wang
In this paper catastrophic optical mirror damage(COMD) mechanism of the semiconductor laser is analyzed. COMD is one of major device damage mechanisms, which is drastically limited laser lifetime and output optical power. The theoretical model that based on heat source with injection current and optical...
Proceedings Article

The High Vacuum Cleaving Passivation Characteristic on 980nm Diode Laser

Tiansheng Zhao, Zaijin Li, Te Li, Peng Lu, Yi Qu, Baoxue Bo, Guojun Liu, Xiaohui Ma, Yong Wang
The high vacuum cleaving passivation characteristic on 980nm diode laser is presented. In this research, diode lasers are cleaved in high vacuum cleaving system, and then coated with thin ZnSe passivation layer in the front and the back facet. The function of the passivation layer is to protect diode...
Proceedings Article

Investigation and research on railway passenger car and EMU battery

Yuan Wen
China railway passenger cars from 25B green cars to the development of high speed EMU, the battery is still followed the lead-acid battery and cadmium nickel battery, battery containing heavy metal railway passenger cars will bring great harm to the environment. Through access to a large number of data...
Proceedings Article

New Type of Bimetal Composite Casting and Welding Connection Square Hammer

Penghui Yang, Shoufan Rong, Xingming Zhao, Yongchang Zhu, Yanhe Wu, Xingyi Li
The brick crusher hammers were used in factory, which wear-resisting was poorer. According this phenomenon, the single structure was designed in symmetrical fission structure. Firstly, high chromium cast and low alloy steel were casted into half of the bimetal hammer head, then two new type bimetal hammer...
Proceedings Article

Research of The Excavator Form-Relieved Tooth Texture with The Medium Carbon Medium Alloy Bainite Wear-Resistant Steel

Xingming Zhao, Shoufan Rong, Xiulan Duan, Penghui Yang, Yanhe Wu, Xingyi Li
According to the working conditions and performance requirements of relieving, this topic designed four groups of chemical composition for the text and put forward a complete set of heat treatment process. And found a set of optimal component ratio and the heat treatment process by the experimental steel...
Proceedings Article

Study of microstructure and mechanical property on bulk Ni–Fe alloys fabricated by electrodeposition

Wei Ding
An electrodeposited Ni-Fe alloy with a nickel content of 75% was introduced in this paper, thickness of this Ni-Fe alloy is 1mm. Microstructure, tensile mechanical, and hardness and the phase were studied by using field emission scanning electron microscopy (FE SEM), tensile test, hardness tester and...
Proceedings Article

Research about the Combustion Synthesis Welding of U75V Rail Steel

Shuzhen Li, Bolin He, Kang Wei, Zongmin Li
As a new welding method, combustion synthesis welding technology caused widespread concern at home and abroad in recent years. The combustion synthesis technology, the concept of combustion synthesis welding, classification, welding process characteristics and influence factors were introduced. The combustion...
Proceedings Article

Analysis of the Coating surface Properties of Coated Paper

Ying Li, Jie Zhang, Haishan Li, Wen juan Gu, Banggui He
The surface properties of coating layer have an important influence on printing quality. In this research, the main objective was to investigate into the coating surface topography and characteristics related to binder. The surface microstructure and properties were explored in the method of numerical...
Proceedings Article

Study on the TIG Welding Technology of the Aluminized Steel

Bixin Guo, Xiaowei Du
The welding property of the Aluminized steel is analyzed in this article, TIG welding technology of Aluminized steel is presented on the base of mass experimentations, it proves that this technology can effectively prevent the welding crack and improve the property of the weld joint.
Proceedings Article

The effect of magnesium doped on microstructure of aluminum alloy under ultrasonic vibration

Chun Li, Da Li, Wen Cheng Huang
Aluminum has great application in the machinery, transportation, aviation and military and other fields, because of its light weight, rich in resources, good comprehensive properties. Structure determines the properties, in order to obtain good properties, the key is to get the fine and uniform equiaxed...
Proceedings Article

Research on the Binder Distribution Depth and Evenness in Coated Paper

Ying Li, Jie Zhang, Haishan Li
In order to characterizing the binder distribution, Changed drying temperatures were used to alter binder distribution in coating drying process, which was used to investigate into the effect of drying condition on the binder distribution and characterize the binder migration in the method of numerical...
Proceedings Article

The microstructure and texture analysis of Ti-6Al-4V alloy through linear friction welding

Heng Zhao, Qingbin Liu, Yaole Xie
The microstructure and texture analysis of Ti-6Al-4V are investigated through SEM (Scanning Electron Microscope). Based on original references, the results show that, the to phase transformation at the welding center enhances yield strength and ultimate strength through orientations distribution. In...
Proceedings Article

Subjective Evaluations of Fabric Wear Prickle Sensation by Using New Rating Scale

Rabie Ahmed Mohammed Asad, Naftali Kiplagat, Weidong YU
In this study, prickle sensation was investigated for wear fabrics having different compositions and physical surface characteristics using 1-7 rating scale. Rating score test for prickle sensory discomfort wear fabric test was conducted on 31 subjects. It was found that prickleness sensation arise during...
Proceedings Article

Extrusion Pressure Analysis of Powder State Material of Non-Plug Solid Conveying in Feeding Section of Single Screw Extruder

Dali Shi, Chunhui Liu, Jianhua Qin
Using a single screw extruder for extruding pure UHMWPE, one of the necessary conditions is to generate large enough extrusion pressure [4]. This article launches a comprehensive and detailed study of raw material of the pure UHMWPE resin powder, establishes a mathematical model of extrusion molding...
Proceedings Article

Elastic Rebound Research in Cold Bending Processing on Aluminum Alloy Plate

Libin Zhou, Huanguo Chen
Taking 5083 aluminum alloy plate in cold bending test for example, according to the different measuring results of the elastic rebound angle, the bending properties of 5083 aluminum alloy is studied.And the data statistics and analysis are finished,The experience curve of “the rebound angle with R/s”...
Proceedings Article

Physical and Functional Properties of Antibacterial Nylon/Bamboo Polyester/Stainless Steel Wrapped Yarns and Knitted Fabrics

Zhi-cai Yu, Jian-Fei Zhang, Ching-Wen Lou, Jia-Horng Lin
There are derivative many problems from electromagnetic (EM) wave radiation with the development of communication technique. To protect the human body from the EM radiation, in this study, the antibacterial nylon (AN)/ bamboo charcoal polyester (BC-PET)/ stainless steel wire (SSW) metal composite yarns...
Proceedings Article

Mechanical Behaviors Study of Epoxy Resins Reinforced with Nano-SiO2 Particles

Jian Zheng, Xiong Chen, Deng Jia, Xin Tong
Epoxy resin composites filled with nanoparticles are widely used for electrical devices such as insulators, VLSI package and rocket engine shell materials. An experimental study on the mechanical property of SiO2-filled epoxy resin composite was carried out by the electronic universal testing machine....
Proceedings Article

Influence of Al Concentration on the High Temperature Cyclic Oxidation Resistance Behavior of Fe-15Cu Alloys

Lingyun Bai, Xianchao Xu, Junhuai Xiang, Songping Wang, Ting Wang
The cyclic oxidation behaviors of Fe-15Cu alloys with different Al concentration at 800 oC were studied. The oxidation kinetics showed that the oxidation process of Fe-15Cu alloys followed the parabolic law, Fe-15Cu-5Al alloy was oxidized more seriously than that of Fe-15Cu-15Al alloy. Analysis of the...
Proceedings Article

Research on Effect of Elastic Modulus on Material Load-relieving Ability

Jun Li, Binan Jiang, Chuang Liu, Chunsheng Hu
The load-relieving material is described by Mooney-Rivlin model. Dynamical response of projectile-based CCD camera is derived by total Lagrangian Increment Method, and the results is simulated numerically by finite element method. The rule of variation of load-relieving materials’ elastic modulus on...
Proceedings Article

Simulation on the Equivalent Relation Between Different Armour Plates Penetrated a Tungsten Sphere

Ran Xiong, Bin Zhang, Yongshi Xu
To research on the equivalent of perforating through LY12CZ aluminum alloy plates and 2 armor steel, based on the rule that the ultimate velocity, the penetration process of tungsten sphere into LY12CZ aluminum alloy plate and 2 armor steel plate was simulated with LS-DYNA finite element code, the numerical...
Proceedings Article

Density Functional Theory Calculation on Electronic Structure and Optical Properties of Copper Doped SnO2

Weigen Wu
Based on Density Functional Theory, we investigated the optical structures and the electronic properties of Cu doped SnO2 with density of 4.35%, including band structure, the density of state (dos), reflectivity spectrum and optical absorption spectrum. The results show that Fermi level access conduction...
Proceedings Article

Die to Package Interconnection Materials and Technologies

Xiaoming Hu
This article introduced the technologies of die to package .these mainly including wire bonding(WB),tape-automated bonding(TAB),and flip chip(FC).the most common wire bonding technique is ball bonding. This is the foundation of the others .at the end parts, the paper illustrated the new interconnection...
Proceedings Article

Ab initio study of the roles of Fe in the electronic properties of ferropericlase

Cui Zhou, Kai Li, Rong Zhang, Xiao Liu, Qingbo Wang
The effects of Fe doping on the electronic properties of MgO have been studied by ab initio method. Iron (Fe) changes the lattice constants while does not change the cell angels. The calculated band shows MgO is an insulator. Iron doping introduces a band level in the band gap, which increases the conduction...
Proceedings Article

First principles study of the electronic properties of MgO under pressure

Cui Zhou, Zhiqiang Liu, Rui Kang, Yue Huang, Qingbo Wang
We have studied the electronic properties of MgO by first principles (CASTEP program). The calculated band gap of MgO shows MgO is an insulator. Pressure increases the band gap from 4.253 to 7.585 eV. The band above the Fermi level shifts to higher energy, while the band below the Fermi level shifts...
Proceedings Article

Impact of the Content of LaNd on Physical Properties of Zn9.3Al7Cu Solder

Shitao Ma, Yanfu Yan, Jinhong Zhu
In the paper a new solder is made by adding trace LaNd into Zn9.3Al7Cu alloy to improve the performance through alloying principle. The impact of the content of LaNd on physical properties of Zn9.3Al7Cu solder is investigated. Results show that the density of solder alloys increases with the increasing...
Proceedings Article

Evaluation of Photocatalytic Activity of Co3O4/Graphene Composite

Wentai Wang, Gabriel Levi, Moses O.Tade, Qin Li
Cobalt oxide/graphene (Co3O4/rGO) was successfully prepared using hydrothermal method. The major aim of the study is to investigate the photocatalytic activities on the removal of methyl orange (MO). These as-prepared catalysts (Co3O4, rGO and Co3O4/rGO) were investigated for the degradation of MO via...
Proceedings Article

Research on the wet shot blasting technology of strip steel surface topography and finite element simulation

Zhi Gao, Yinjian Bu
In order to solve the problem of pollution in the strip steel pickling process, we propose a new process of wet shot blasting, adding water system in the conventional shot blasting equipment. Through the finite element software ANSYS/LS-DYNA, we conduct the dynamic simulation of dry and wet shot blasting...
Proceedings Article

Research of Factors Affecting Orientation of PAN Precursor used in Carbon Fiber

Yue Tang, Fubin Hou
In the process of producing PAN precursor used in carbon fiber, applying orthogonal experiment method and a dry-wet spinning technology, the main systematical study are the influence of coagulation bath, jet stretch, pre-draft and water-bath draft on degree of orientation. Results show that under applying...
Proceedings Article

Status and Development of Surface Alloying by Electron Beam

Junwei Duan, Yiping Huang, Ruibin Zhang, Li Wan, Hang Li, Juan Liu
In The technology of surface alloying by electron beam had been developed as a new surface treatment in recent decades. Based on the introduction of the principle of electron beam, focuses on the research status of the surface alloying by electron beam, and a brief introduction of the Surface alloying...
Proceedings Article

Research on the Formability of Metallic Thin-walled Tube Hydroforming

Yulai She, Hongyi Liao, Jianwei Liu, YuHan LI, Chenmei Kong
Tube hydroforming is a developed and successful way for complex shapes with less operations required compared to conventional tube forming. Tube hydroforming technology is introduced briefly. Then the principle of forming, advantages and disadvantages of hydraulic bulging, Tube Hydroforming with Radial...
Proceedings Article

Experiment Research on the Mechanical Performance of EPDM Insulation Pyrolysis Process

Jing Jiang, Jin-sheng Xu, Xiong Chen, Zhong-shui Zhang
In order to study the pyrolysis process of Ethylene Propylene Diene Monomer (EPDM) insulation material and its compression mechanical behaviour under high strain rates, the thermal stability of EPDM was analysed by TGA in the first place. Based on the TG curve and the thermal degradation temperature,...
Proceedings Article

Study on the strain-compensated Arrhenius-type constitutive model of Mg-4Al-3Ca-1.5Zn-1Nd-0.2Mn Magnesium alloy

Gang Chen, An zhen Guo, Li Ma, Wei Chen, Guowei Zhang
Compression tests of Mg-4Al-3Ca1.5Zn-1Nd-0.2Mn Magnesium alloy as-extruded were carried out on the Gleeble-3500 thermo-mechanical simulator. The compression testing temperatures were in the range of 200–350 at intervals 50 , while the imposed constant true strain rates were 0.001, 0.01, 0.1, 1 and 10S-1.True...
Proceedings Article

The Research Progress and Application Expectation of Metal Rubber Vibration Isolator

Shu-lu Wang, Hong-bai Bai, Ghun-hong Lu
With the rapid development of science and technology, all kinds of high technical equipment is facing more and more serious problem of vibration isolation buffer under special environment. In order to adapt to this new situation, we designed the metal rubber vibration isolator. Firstly, this paper briefly...
Proceedings Article

Study on fire performance of the insulation photovoltaic building components

Liang Yang
The insulation photovoltaic Building component is a new kind of energy-saving building material with the function of heat insulation and new energy transformation. Because of combustible organic insulation materials and fire risk caused by control circuit fault, the fire performance must be concerned...
Proceedings Article

Fatigue small crack propagation analysis of aero-aluminium alloy considering crack tip plasticity

Guangming Kong, Xuexia Gao, Xudong Li, Zhitao Mu, Tao Liu
An appropriate fatigue crack growth model is the key to accurately evaluate fatigue life of component. Researching on the McEvily model, considering the influence of elastic-plastic behaviour and crack closure, a modified elastic-plastic small crack propagation characterization model is proposed. The...
Proceedings Article

The Influence of Welding Process Parameters on aluminium alloy Multi-pass Welding Residual Stress

Cang Song
In this paper, we discuss the influence of different preheating temperature and welding speed on welding residual stress through numerical simulation, which takes a certain type of emu car KK middle end of T type welded joint as an example.Using the double ellipsoid heat source model checking got temperature...
Proceedings Article

Synthesis and Characteristics of Multi-walled Carbon Nanotubes Coated Nanostructure TiO2

Jingheng Deng, Kanping Yu, Jianguo Xie
Nanostructure anatase TiO2/carbon nanotubes (TiO2/CNTs) were prepared by hydrothermal process using acid treated CNTs and titanium (IV) sulfate. The materials were characterized using X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET). The results showed...
Proceedings Article

Assembly of L-cys coated Quantum Dots-Au@Ag nanorods structure with fluorescence enhancement

Xiaoming Lin, Renming Liu, Jiahua Li, Xuehua Wang
In this paper, Au nanorods and Au@Ag nanorods were synthesized by seed –mediated growth process, and the Colloidal quantum dots CdSe/CdS/ZnS were produced by successive ion-layer absorption and reaction methods. A low-cost and practical ligand exchange of oil phase quantum dots and amino-functionalized...
Proceedings Article

Yellow mud/gel composites for preventing coal spontaneous combustion

Yinghua Zhang, Peiling Zhou, Zhi’an Huang, Yukun Gao, Liwen Jiang
To address the shortcomings of single use of existing fire prevention materials, a novel composite that combined the characteristics of yellow mud and gel was designed and investigated. The composite grout composed of yellow mud and polymer gel can overcome the limitations of single fire prevention materials...
Proceedings Article

Analysis of Building Life Cycle Energy Consumption Based on the Wall Insulation Materials

Lina Zhao, Junlan Yang
In this paper, an energy analysis model is set up in order to clarify the effect of insulation materials on the thermal performance and the energy consumption of building envelope. Three types of insulation materials commonly used in Germany including mineral fiber, polyurethane and vacuum insulation...
Proceedings Article

Identification of Complex Blocks in the Corner of Underground Chamber

Jianyong Lia, Guangxiang Yuan, Yang Zhao, Anming Wang, Zhiquan Huang
The combination of free planes in the corner of an underground chamber is complex. If the fractures cross the roof and walls, or floor and walls at the same time, a complex key block may exist. The theorem of finiteness in the classical block theory applies only to the convex block, and not to the non-convex....
Proceedings Article

Study on the Effect of Titanate Coupling Agent on the Impact Properties improvement of Polystyrene/TiO2 Nanocomposites

Dongmei Zhang, Xiaoyan Wang, Xinrong Kan
A study is carried out to investigate the influences of compounding process and surface treatment on nanometre-sized TiO2 filled polystyrene. The compounding process is discussed with a torque rheometer. The TiO2 filler is surface-treated with a liquid titanate coupling agent. The effects of coupling...
Proceedings Article

Analysis on Micro-Mechanical State at Tip of Stress Corrosion Cracking in Nickel base Alloy

Xue He, Yongqiang Li, Yinghao Cui, Zheng Chen
It is one of the main failure forms that stress corrosion cracking (SCC) of nickel base alloys and stainless steels in the nuclear pressure vessels and piping. Current researches show that SCC is a process of oxide film rupture and reform. To understand the micro-mechanical state at the SCC crack tip,...
Proceedings Article

Research on the Influence of Coating Solid on Binder Migration

Ying Li, Jie Zhang, Wen juan Gu, Banggui He
The information of surface topography and structure of coating layer were significant to the chemical-physical properties of coated paper as well as the print quality The main aim of this study was to investigate the effect of coating solid on the binder distribution in the method of numerical analysis...
Proceedings Article

Study on the Coating Surface Characteristics of Coated Paper

Ying Li, Qinming Wang, Wenjuan Gu, Banggui He
The surface physical and chemical properties of coating layer have an important effect on the final printing quality. In this study, the main aim was to investigate into the surface characteristics and surface microstructure of coating layer. The surface chemical property was explored by OCA to obtain...
Proceedings Article

Improvement of Etching Method of Macroscopic Metallographic Examination Based on TRIZ Theory

Jianjun Yu, Xucheng Rong
Metallographic examination is a traditional technology. In this paper, etching method of macro inspection of metallographic was set as an example. Through analyzing the example by Su-Field Model and Physical Contradictions, we convert a practical problem into a TRIZ problem, and find out the final solution...
Proceedings Article

Brief Analysis on the Aging of Traction Transformer Insulation

YanHong Guo
In the power supply system of electrified railway, traction transformer is an important part and its running state plays an important role on the safety of railway operation. In this paper, we will analyze the transformer load curve, simulates the change of the temperature rise and discuss the influence...
Proceedings Article

Study on the Coating Surface Binder Content by SEM and AFM

Ying Li, Jie Zhang, Wenjuan Gu, Banggui He
Binder is the essential component of coating color recipe, which has an important influence on the surface topography and properties of coating layer. In this research, the main objective was to investigate into the coating surface binder content related to the coating color recipe. The surface binder...
Proceedings Article

Research on the Organization Performance of AgSnO2 Electrical Contact Materials

Xingrong Jiang
Metal oxide electrical contact materials because it has excellent corrosion resistance, good weldability, high conductivity and high thermal conductivity, in the general application of relay is more and more common. In this paper, the research of system adopts the technology of the preparation of AgSnO2...
Proceedings Article

The Preparation of ITO nano-powder by Arc plasma method

Lida Sun, Jing Wang, Yan Jiang, Zijing Li, Ruimin Xiao, Shenggang Zhou
ITO nanopowder of the high purity was prepared by self-desigred fabricated arc plasma apparatus. The crystal structure, morphology, particle size distribution and purity were characterized by X-ray diffraction(XRD) , transmission electron microscopy(TEM) and Inductively Coupled Plasma Action Emission...
Proceedings Article

The research and development of heat insulation materials with low thermal-conductivity in high temperature

Yanjun Yu
The important tendency of the new style heat insulation materials is the research and development of the composites which have low thermal-conductivity in high temperature. The characteristics of the alumina-silicate fibre with K2Ti6O13 whiskers and SiO2.aerogel are discussed in this paper. Finally,...
Proceedings Article

The preparation & characterization of Au/HZSM-5 catalyst and its application in CH4 adsorption

Aisha Nulahong, Wenlong Mo, Fengyun Ma
Au/HZSM-5 catalysts were prepared by negative deposition-precipitation method in this paper. XRD/Uv-vis/TEM/NH3-TPD/FT-IR technologies were used to analysis the characterization of prepared catalysts, and the evaluation of the catalysts was carried out by methane adsorption experiment. XRD and TEM showed...
Proceedings Article

Electrical Property of Carbon Nanotube Fibers from Chemical Vapor Deposition Synthesis

Jingdong Zhu
Because of facile synthesis, carbon nanotube (CNT) fibers from chemical vapor deposition can be used for diverse applications. In this study, the electrical property of CNT fibers was investigated. The room-temperature electrical conductivity of a typical CNT fiber was measured to be 5 105 S/m. The electrical-conductivity...
Proceedings Article

Preparation and Characterization of the Phthalazinone Structure-based Microporous Organic Polymer

Kuanyu Yuan, Cheng Liu, Hongmin Duan, Manxia Zhang, Xigao Jian
In this work, a new covalent triazine framework based on phthalazinone-containing dinitrile building blocks was prepared by the dynamic nitrile-trimerization reaction. The FT-IR spectra of BCTF illustrated the characteristic peaks of the triazine at 1503 cm-1 and 1360 cm-1. The nitrogen sorption isotherm...
Proceedings Article

Thermal Improvable Behavior of A Pressed Fitting Mixed Explosive

Lin Jia, Lin-jun Zhang, Dong-mei Zhang, Yan Gu, Kai-di Xin, Zhi-qun Chen, Jie-yu Luan, Ke-yong Wang
A mixed explosive contains Al powder, hexogen (RDX), paraffin, etc. It is pressed fitting into 20×20mm pillars. The pillars are heated in 55C for 57days and are measured in volume, mass and density. They are experimented in mechanical properties, sensitivities, stability. The micro-structure of the pillar...
Proceedings Article

Wear characteristics of a W6Mo5Cr4V2 high speed steel in friction stir welding of AA6061/SiC/55p composite

Xuecheng Song, Lijie Guo, Xiaosong Feng, Fan Cui
Tool wear is a key issue for the friction stir welding (FSW) of aluminum matrix composites (AMCs), especially when the volume fraction of reinforcing particulates is relatively high. In this study, a tapered smooth tool of W6Mo5Cr4V2 high speed steel is used to weld a cast AMC composed of AA6061 matrix...
Proceedings Article

Thermal Property of Carbon Nanotube Fibers from Chemical Vapor Deposition Synthesis

Jingdong Zhu
In this study, thermal property of the carbon nanotube (CNT) fibers from chemical vapor deposition synthesis was investigated. Thermal conductivity of the CNT fibers was measured using the “T”-type method; a value of 75.9 WK 1m 1was obtained at room temperature. Temperature dependence of the thermal...
Proceedings Article

Toughening Analysis of Eutectic Ceramic Composite with Damage

Heng Liu, Gang Zhao, RunZe Xiong
The damage variables were defined by the microstructure of rod-shaped eutectic with parallel nano-micron fibers. The maximum strain criterion was used for determining the loading function. According to the attenuation characteristic of eutectic rigidity, the critical fracture stress of the damage rod-shaped...
Proceedings Article

Preparation and Mechanical Properties of Carbon Nanotubes Reinforced Al2O3/TiC composites

Jing Li, Hui Liu
Carbon nanotubes reinforced Al2O3/TiC composites were prepared by hot-pressed sintering in vacuum. The preparation technology and mechanical properties of Al2O3/TiC/CNTs composites were investigated. The results show that the phases of the composites are Al2O3, TiC and carbon nanotubes. The mechanical...
Proceedings Article

Porous WO3 beads fabricated by microfludic device

Jun Tian, Zeliang Dong, Yanjie Wang, Dongmei Zhao, Yanhong Zhang, Liguo Sun
In this study, we have fabricated porous WO3 beads by microfluidic device. The polystyrene(PS) nanosphere arrays were filled by WO3 to prepare porous beads by using a template method. At the same time, in this paper, the raw materials used in this experiment is tungsten oxide which has the photoelectrochromic...
Proceedings Article

Effect of Mo on the microstructure and thermal expansion of high Si ferritic heat-resistant ductile iron

Kyeong-hwan Choe, Kyong-whoan Lee, Myung-ho Kim
The effect of molybdenum (Mo) on the microstructure and thermal expansion of heat-resistant ductile iron having ferrite matrix was investigated. Microstructure of heat-resistant ferritic ductile iron consists of ferrite, eutectic carbide at eutectic cell boundaries, precipitated carbide in grain and...
Proceedings Article

Effect of minor Gd on the corrosion behavior of AZ81 alloy

Jun Chen, Qing Zhang, Xing-yuan Zhang, Quan-an Li
The corrosion behaviors of AZ81 magnesium alloy with minor Gd addition have been researched in this paper. The results show that with the minor addition of 0.5-1% Gd, the microstructure of AZ81 magnesium alloy is obviously refined, and the spotted, high-melting point phase Al-Gd intermetallic compounds...
Proceedings Article

Microstructure and Mechanical Properties of AZ81 Magnesium Alloy

Quan-an Li, Xiaoya Chen, Qing Zhang, Jun Chen, Yao Zhou
The microstructure and mechanical properties of AZ81 magnesium alloy have been studied by micro-analysis and tensile tests. The results showed that the alloy mainly consists of -Mg matrix, Mg17Al12. The tensile strength of AZ81 magnesium alloy is measured, The best tensile strength is 258MPa at 20 .
Proceedings Article

Microstructure and Mechanical Properties of Mg-12Gd-2Y-1Sm-0.5Zr Alloy

Yao Zhou, Quan-an Li, Jun Chen, Qing Zhang, Xiaoya Chen
The microstructure and aging precipitated phases of Mg-12Gd-2Y-1Sm-0.5Zr alloy have been studied by micro-analysis XRD and EDS. Through the analysis it is found that the precipitated phases in the alloy contains Mg24Y5, Mg5Gd and Mg41Sm5. The tensile strength peak of Mg-12Gd-2Y-1Sm-0.5Zr alloy appears...
Proceedings Article

Research Progress of Gadolinium in Heat Resistant Magnesium alloys

Jinglong Yan, Quan-an Li, Xiaoya Chen, Yao Zhou
This paper expounds the characteristics of Gd and Mg-Gd binary alloys, Introduces the mechanism of Gd addition on the heat resistant magnesium alloys. Reviewed the research progress in magnesium alloys containing Gd on mechanical properties at room temperature and high temperature, and prospected their...
Proceedings Article

Study on Processing Parameters of Cold Spray Al coating on Magnesium Alloy

Yuliang Liu, Qing Zhang
Cold spray in used to form Al coating on AZ31 magnesium alloy. Several parameters, such as spraying distance, gas temperature, and gas pressure are selected as the main processing parameters for cold spray. According to orthogonal design, orthogonal experiments are designed for the optimization of processing...
Proceedings Article

Lightweight Design of an Axial Flow Roller Based on Sensitivity Analysis

Yufeng Du, Zhenghe Song, Falong Lu, Zhongxiang Zhu
In order to improve the working performance of axial flow roller of harvester, light weight design of an axial flow roller was conducted based on sensitivity analysis. Under the CAD/CAE integrated design platforms, the statics finite analysis and sensitivity analysis of the axial flow roller were executed...
Proceedings Article

Research on Microstructures and Mechanical Properties of Mg-Gd-Y-Sr-Zr Alloy

Lei-lei Chen, Quan-an Li, Jun Chen, Qing Zhang, Xing-yuan Zhang
The microstructures and mechanical properties of Mg-Gd-Y-Sr-Zr alloy was investigated by means of optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and tensile tests. The as-cast alloy contains a microstructure consisting of -Mg matrix, Mg5Gd phase, Mg24Y5 phase and Mg17Sr2....
Proceedings Article

The Crack Tip Fields for Anti-plane Crack in Functionally Graded Piezoelectric Materials with Arbitrarily Gradient Direction

Yao Dai, Xiao Chong, Wei-hai Sun
The higher order crack tip fields for anti-plane crack in functionally graded piezoelectric materials(FGPMs) under mechanical and electrical loadings are investigated. Although the elastic stiffness, piezoelectric parameter, and dielectric permittivity of FGPMs are assumed to be exponential functions...
Proceedings Article

The Higher Order Crack Tip Fields for Anti-plane Crack in Power Functionally Graded Piezoelectric Materials

Yao Dai, Xiao Chong, Jing-wen Pan
The eigen-solutions of the crack tip fields for an anti-plane crack in functionally graded piezoelectric materials (FGPMs) are studied. Different from previous analyses, all material properties of the FGPM are assumed to be power-law function of y perpendicular to the crack. The crack surfaces are electrically...
Proceedings Article

Study on the relation between plastic strain rate and micro movement of dislocation in -TiAl alloy

Weiping Zhao, Guotao Zhang, Rui Wang, Xiaohui Wang
The macro-deformation of crystal attributes the micro-slip in crystal of -TiAl alloy. So it is important to reveal the relation between macro-deformation and micro-slip of dislocation. In order to illustrate this relationship, the geometry relation between macro-deformation and dislocation density/external...
Proceedings Article

The assembly dimension control technology of stainless steel pipe and copper fins for thermal shroud

Fei Xu, Yuzhong Li, Wanqing Yang, Yongli Tong, Lijun Cui
The thermal shroud has the structure of stainless steel pipe welding with copper fins. It has well capability of heat exchange, structural strength and inflexibility which is used to many types of equipment for space environment simulation in recent years. This article will conduct technology research...
Proceedings Article

Surface Strengthening of High Speed Steel by PCVD Combined Nitriding-Coating

Yuezeng Xu, Jiang Fan
To study the effects of PCVD combined nitriding coating processing on cutting performance of high speed steel tool, the PCVD was performed on W6Mo5Cr4VZ (MZ) steel tools to get surface strengthening, tool surface micro-hardness before and after PCVD process was studied, wear property and bonding force...
Proceedings Article

Fabrication of the MAO coating on Mg alloy and Friction Behaviors Analysis

Changqing Li, Yunlong Zhang, Shucheng Wang, Yumin Zhang, Yufeng Zhou
There was a great attraction to apply magnesium alloy as a biomedical material due to its biodegradable feature and suitable mechanical properties. In order to further improve the wear resistance performance of magnesium alloy, a micro-arc oxidation (MAO) coating containing MgSiO3 was generated on the...
Proceedings Article

A Soft Template Method to Graphene Oxide Nanosheet/Polypyrrole Nanofibers Hybrid as Supercapacitor Electrode Material

Weitong Xu, Xiwen Yang, Ke Jiang, Li Li Zhang, Lijuan Luo, Xiaoning Tian
A simple and effective method has been used to prepare graphene oxide and/or partially reduced graphene oxide–polypyrrole (GO/Ppy and PRGO/Ppy) composite with sandwich structures by using the soft template method. In the case of GO/Ppy8, a high specific capacitance of 456 F/g at a current density of...
Proceedings Article

Effect of cooling speed on microstructure of as-cast Mg-3.7Zn-0.6RE quasi-crystal alloy

Yang Yang, Kui Zhang, Minglong Ma
By means of optical micrograph(OM), X-ray diffraction (XRD), scanning electron micrograph(SEM) and Energy Dispersive Spectrometer(EDS) analysis, the microstructure and phase compositions of Mg-3.7Zn-0.6RE alloys with different cooling speed were studied. All alloys had dendritic structure, the grain...
Proceedings Article

Strong texture development and magnetostriction in recrystallized Fe81Ga19 thin sheet

Quan Fu, Yuhui Sha, Fang Zhang, Fan Lei, Liang Zuo
Texture evolution in Fe81Ga19 thin sheets produced by specially designed rolling and annealing process was examined using X-ray diffraction analysis. Cold rolled sheet is characterized by strong fiber (//ND) , fiber (//RD) and widely distributed shear bands through the thickness. A strong fiber (//RD)...
Proceedings Article

Compressive Property of Aluminum Pyramidal Lattice Material

Yunchao Jia, Zhidong Guan, Xingyi Chen
Compressive property of lattice material with pyramidal truss core was investigated under uniform quasi-static compression. Load–displacement response and shape deformations of trusses during compressive loading was simulated by finite element method. The numerical prediction is in good agreement with...
Proceedings Article

Research of Dynamic Recrystallization of Ferrite in a Low Carbon Steel

Meng Wang, Yangbo Liu, Qingsong Sun, Qian Tong
The microstructure evolution of ferrite in a low carbon steel during hot uniaxial compression tests at 700C and 0.01s-1 was investigated by means of OM, SEM, EBSD and TEM. In order to investigate the effect of cementite particles size on dynamic recrystallization (DRX) of ferrite, two kinds of different...
Proceedings Article

Size, shape-controlled Synthesis of BaSiF6 nanostructures in a hydrothermal process

Rongli Sang, Hengyong Wei, Yuzhu Zhang
Different sizes and shapes of BaSiF6 were synthesized by a low temperature hydrothermal method using citric acid (CA) as a chelating agent and cetyltrimethylammonium bromide (CTAB) as a surfactant. The sizes and morphologies of the BaSiF6 could be altered by controlled the molar radio of CA to Ba2+....
Proceedings Article

Improvement of self-crosslinking HXNBR by multi-walled carbon nanotubes in latex blending

Dongmei Yue, Lin Su
The dispersed MWCNT was introduced into self-crosslinking HXNBR latex to get the compounded latex film. Mechanical, electrical and thermal properties of this composite were investigated in this article. Volume resistivity decreased significantly with the increase of the MWCNT loading. When the content...