Proceedings of the 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology

Session: Session 2: Materials Science and Engineering

31 articles
Proceedings Article

Review of Stellite Alloys Intelligent Processing Methods in China

Xiao-Guang Yue, Zhi-Gang Liu, Xiao-Zhi Wang
Stellite is cemented carbide to resist a variety of wear and corrosion and high temperature oxidation. This paper introduces a series of domestic Stellite alloy intelligent processing methods. In China, Stellite alloy academic research is not very popular, but many of them have representation. These...
Proceedings Article

Study of T1 Copper Corrosion Behavior in Qingyuan Rural Atmosphere

Yongcun Liang, Fan Yang, Yinjie Kuang
By optical microscopy, SEM, XRD, EDS and EIS, study the corrosion behavior of copper in Qingyuan rural atmospheric environment. The results showed that: after exposure in Qingyuan rural atmosphere, copper has corrosion. With time, the corrosion products increased, and gradually cover the surface of the...
Proceedings Article

Research on the Application of Phase Change Materials in the Field of Building Energy Efficiency

YongLi Wang, Xiuhong Yi
Phase change materials and traditional building materials can be combined into new building materials which have regenerative and thermostat function, it has a large energy density and heat absorbing approximately constant temperature and it can effectively maintain comfortable indoor environment and...
Proceedings Article

Simulation Analysis of Vertical Interconnection Column Misalignment during LTCC Laminating Process

Tianhong Luo, Dejian Zhou
A three-dimensional model of LTCC microwave component was built by the finite element software ANSYS, and the influence of LTCC laminating process parameters to vertical interconnection column misalignment was studied by simulation analysis. Results show that the closer to the edge of component, the...
Proceedings Article

Study on Structure and Properties of New Heterocyclic Aramid Fibers

Yingdeng Song, Bintai Li, Liying Xing
The structure parameters of a new heterocyclic aramid fiber (F-3B) and the Kevlar-49 fiber were characterized using wide-angle X-ray diffraction (WAXD) in detail. The tensile strength and modulus of aramid fibers were determined by monofilament tensile experiment. And the correlation of structure parameters...
Proceedings Article

Influence of steel slag on the properties of steam-cured concrete

Jin Hu, Li-ang Hou, Kunpeng Li
In this paper, the influence of steel slag on the compressive strength, permeability to chloride ion and carbonation resistance of steam-cured concrete was investigated. The results show that for steam-cured concrete with water to binder ratio (W/B) of 0.45, replacing 30% of cement by steel slag tends...
Proceedings Article

Synthesis of the spinel LiNi0.5Mn1.5O4 as 5V cathode material by carbonate co-precipitation method

Shiyou Li, Shan Geng
LiNi0.5Mn1.5O4 has been synthesized by carbonate co-precipitation method in which we got the precursor that was pretreated with H2O2 (an oxidant), in order to oxidize part of Mn2+ to Mn4+,results in a decrease of Mn3+ in the structure. Result in the average valence of Mn is approximately 4 in the LiNi0.5Mn1.5O4...
Proceedings Article

Size Effect Of Electronic States In Graphene Quantum Disk

Xin Li, Xiaobo Feng
In this paper, we studied the disk radius R graphene quantum dots of electronic spectroscopy by solving the Dirac equation of electron. We obtained two shapes of armrest and saw boundary of graphene quantum disk electronic energy level in the situation of whether with applied magnetic field or not, along...
Proceedings Article

Effect of Ta on the wear behavior of Laser Cladding Ni60 Alloy Coatings

Wei Fu, YaoWei Yong, Ting Yu, QiLin Deng
Ni60 coating provides excellent hardness and wear resistance, it is usually used to strengthen the parts worked the severely conditions with intensified friction. While Ni60 has a strong crack susceptibility due to its high brittleness and high thermal gradient in transient cladding process. In order...
Proceedings Article

Study on Comparison of Four Different Coatings onto Crystallizer

Wei Fu, YaoWei Yong, Hongyuan Fang
The Cr-Zr-Cu crystallizer surface was strengthened by laser cladding and obtained the gradient alloy coating. The coating was compared with the other three coating produced by other technology such as electroplating, plasma spraying and plasma spraying with re-melting. The experiments were conducted...
Proceedings Article

A Multi-Scale Copper Oxide Film with Excellent Superhydrophobic Property on X90 Pipeline Steel

Hao Li, Sirong Yu, XiangXiang Han
In this work, a multi-scale copper oxide film with excellent superhydrophobic property on X90 pipeline steel was fabricated by a combination method including electrodeposition, solution-immersion and chemical modification. Moreover, the influence of experimental parameters, such as solution-immersion...
Proceedings Article

The Morphology and Roughness of Aluminized CoCrAlY Coating By HCPEB

ZhiYong Han, Jian Han
In this paper, CoCrAlY coating was prepared on the substrate, Ni-based super alloy (GH4169), using Air Plasma Spray (APS). After deposition, the coating was irradiated by High Current Pulse Electron Beam (HCPEB) with different number of pulse beam. Then the micro-structure of coating surface, like the...
Proceedings Article

The effect of particles integrity on the damping capacities of fly-ash cenospheres/AZ91D composites

GuoLi Fan, RongYu Si, Ming Yuan
10wt.% of fly ash cenospheres (FAC), two kinds of particle average size (60 m and 120 m), two kinds of particles morphology (ball-milled to powder fragments and non-ball milled), were added to the AZ91D Mg alloy slurry to prepare the four kinds of magnesium matrix composites by stirring casting method....
Proceedings Article

Preparation and microstructure characterization of zinc coating prepared by pack cementation

Li Liu, Sirong Yu
The zinc coatings on Q235 steel substrate were prepared by pack cementation at 400 °C for different holding time. The microstructure, thickness and hardness of the coatings were investigated. The thickness and hardness of the coating increased gradually with increasing heating time. The coating was composed...
Proceedings Article

Comparison of wear behavior of WC-Cr3C2 reinforced Ni-Cr layers in dry friction and in distilled water

Jianbo Zhao, Yong Wang, Bin Han
WC-Cr3C2 reinforced Ni-Cr layers using self-made Ni55 alloy powder were deposited on a medium carbon steel by laser cladding in this work. From the results of contrast wear tests in dry friction and in distilled water, we found that water plays few lubrication in the process of friction and wear, but...
Proceedings Article

Fabrication of thermal barrier coatings on the inner surface of carbon steel tubular components via a novel mechanical alloying method

Bo Li, YiFu Shen
The thermal barrier coatings of NiCrAl•Y2O3 and NiCrAlCo•Y2O3 were fabricated on the inner surface of low carbon steel tubular components via a novel high-energy mechanical alloying method. The microstructure, elemental distribution and phase composition of the prepared coatings were carefully investigated...
Proceedings Article

Preparation of Zeolite Cross-linked Chitosan and Adsorption for Copper(II) and Iron(III)

Zengxin Li, Yuehuan Yuan, LiLi Xing, Yujuan Ma, Rutao Wang
Copper and iron ions are common heavy metal ions in industrial wastewater, pollution can be caused by the direct emissions of wastewater to the environment, only when waste water reach the standard that it can be let out. Zeolite cross-linked chitosan composite adsorbent using natural raw materials,...
Proceedings Article

Catalytic performances of Cu-Mn-Ce oxide/SiC monolithic catalyst for oxidation of toluene under microwave irradiation

Bin Guo, Xurui Hu, Xin Wang, Shuo Zhang
A monolithic Cu-Mn-Ce oxides supported on a ring of silicon carbide (SiC) with molar ratios 1:2:1 were prepared by the sol-gel combustion method without any binder. The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller method (BET)....
Proceedings Article

Preparation and Characterization of zirconia-core ceria -shell composites and its formation mechanism

Xilu Hou, Kehui Qiu, Min Zhang, Wenjian Tang, GongGong Lu, Xiqiang Yuan, Qianchen Liu
In this work, a strategy was developed for the synthesis of nano-sized, zirconia-core ceria -shell composites directly via chemical precipitation method in mixed solvents. The as-synthesized ZrO2@CeO2 composites were characterized by X-ray diffraction (XRD), zeta potential analysis, field emission scanning...
Proceedings Article

Preparation and Photocatalytic Properties of Cu-doped Nano-TiO2/Microcrystal Muscovite Composites

Xiqiang Yuan, Kehui Qiu, Wenjian Tang, Qianchen Liu
With microcrystal muscovite (MCM) as the carrier, butyl titanate as the source of titanium, acetic acid as the inhibitors, copper nitrate as dopant, Cu-doped nano-TiO2/MCM composites were prepared by the sol–gel method. Then the composites were calcined at 500 oC for 2 hours. The samples were characterized...
Proceedings Article

A novel adsorbent for Sr2+ prepared by grafting the DB18C6 on D564 resins

XiuShen Ye, Yaoqiang Hu, Chaoming Quan, Li Sun, Haining Liu, Zhijian Wu
A novel adsorbent was prepared by grafted the Dibenzo-18-Crown-6-Ether (DB18C6) on D564 resins and characterized by Thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FTIR). Adsorption of Sr2+ from aqueous solutions was investigated in batch method as a function of contact time, concentration...
Proceedings Article

Transferability of giant atomic clusters in the HCP crystals twinning

Shan Jiang
The atomic motions in the twinning deformation of hexagonal close-packed (HCP) crystals was investigated at the atomic scale by using the giant atomic clusters (GACs) induced model, aimed at deepening the understanding to the twinning mechanism. It is found that the twin boundaries are composed of gradually...
Proceedings Article

Effect of Cr content on the micro structure and abrasion performance of high chromium cast Iron

Yunlong Zhang, Yumin Zhang, Wei Zhou, RuiXia Zhang, Ming Hu
In order to achieve the gradient metal high chromium cast iron which can fill the 3D network structure SiC porous ceramics, it was necessary to design cast iron materials with different performance by adjusting the experimental parameters. The cast iron material was fabricated by the molten casting method....
Proceedings Article

Structural refinement of Cr-75Nb alloy subjected to air blast shot peening

Haizhong Zheng, Qinhao Luo, XiaoYong Shu, Guifa Li, LingLing Xiong
In this paper, the air blast shot peening on Cr-75Nb alloy was carried out at the pressure of 0.6 MPa and processing duration of 13 min. The result showed that a severe plastic deformation layer was gained on the surface of Cr-75Nb alloy. The thickness of deformed layer was about 50 µm, and the structural...
Proceedings Article

Effect of 5Gpa Pressure Treatment on the Phase Transformation of α+γ2 β in Cu-Al Alloy

Jinzhu Zhao, Shengxue Yu
The phase transformation temperature and time of + 2 ß in Cu-Al alloy before and after 5Gpa pressure treatment were measured by differential scanning calorimeter, its activation energy and Avrami exponent were also calculated. The effect of 5Gpa pressure treatment on the phase transformation of + 2 ß...
Proceedings Article

Thermodynamic analysis of X80 pipeline steel after calcium treatment

Pengbiao Wang, Qichun Peng, JinLing Yang
Based on thermodynamic calculation analysis the inclusions and thermodynamics of X80 before and after calcium treatment on the sample of a steel production Results show that the effect of Al2O3 inclusions degeneration is good and S would exist in a dissolved state so that avoids the CaS inclusion precipitation...
Proceedings Article

The numerical simulation of the influence of orientational vibratory stress relief to aluminium alloy 7075-T651 fatigue life

Jing Song, Yidu Zhang, Ke Sun
For the application situation of traditional vibratory stress relief (VSR) method, technology of orientational VSR was proposed, that is the residual stress distributions of workpiece is simulated by use of finite element method, and then determine the part of workpiece need to reduce residual stress,...
Proceedings Article

Preparation and Characterization of Soybean Straw Activated Carbon by Zinc Chloride

Zhong Xu, Dan Zhao
The activated carbon was prepared from soybean straw by activation of zinc chloride. Porosity characterstics were determined from the analysis of N2 adsorption isotherms using BET and BJH method. Microstructure of the sample was examined using a scanning electron microscopy.The results showed that the...
Proceedings Article

Synthesis and Properties of a Double-sided and Multi-layered Metal Organic Framework

Huanqing Ma, Shujun Wang, Hongyan Liu, Fanbin Meng, WeiYing Gao, Xingyu Xu
Two new double-sided and multi-layered network porous compound named 1 [Ni2(BTC)2(DABCO)(DEA)2] have been synthesized by solvent thermal synthesis method. Which, for the first time, exhibit an unusual double-sided and multi-layered MOF. The double-sided MOF structure extended to regular hexagon morphology...
Proceedings Article

Study on the Shear Behaviors of RC New-Beam and Old-Slab Composite Component

DaFu Cao, Xin Wei, Wenjie Ge
In order to study the influences of shear span ratio and stirrup spacing on the shear behaviors of RC beam-slab composite component, static shear experiment of 9 RC beam-slab composite component and 3 beam-slab casting component were made. The results show that the development trend of flexural-shear...
Proceedings Article

Modification and Verification of Fracture Criterion of BR1500HS Based on Freudenthal Fracture Criterion

Yu-feng Xia, Cai-hong Ye, Li Ren, Li Wang
The hot tensile test of BR1500HS ultrahigh strength steel was carried out on Gleeble3500 thermo-mechanical simulator. The process was predicted by finite element simulation based on Freudenthal fracture criterion. Then, the Freudenthal fracture criterion is modified based on the relationship between...