Effects of W on high-temperature antioxidative properties of Nb/Nb5Si3 composite
- 10.2991/amcce-17.2017.190How to use a DOI?
- Spark plasma sintering; In-situ synthesis; Oxidation behaviour; Nb/Nb5Si3 composites
The multi-component Nb-Si system in-situ composites with composition of Nb-20Si-5Al-15Ti-xW (at. %) were prepared by Spark Plasma Sintering (SPS) technology. The high temperature oxidation behavior and microstructure of the alloy were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and electron probe microscopy (EPMA). The results show that the microstructure of the composite consists of (Nb, Ti, W)ss, -Nb5Si3, -Nb5Si3 and (Nb, Ti, W)5Si3 phase. With an increase of W addition, the oxidation resistance of the composites at 800°C decrease firstly and then increase. At 1100°C the addition of W decreased the oxidation resistance during the first 40h, then changed to increase the oxidation resistance. Pest oxidation behavior was exhibited by the Nb-20Si-5Al-15Ti-xW. The oxidation resistance of the composite at 1100°C is better than at 800°C because the oxide scale is more compact structure.
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - WenYuan Long AU - Weiguo Liu AU - Xuan Liu PY - 2017/03 DA - 2017/03 TI - Effects of W on high-temperature antioxidative properties of Nb/Nb5Si3 composite BT - Proceedings of the 2017 2nd International Conference on Automation, Mechanical Control and Computational Engineering (AMCCE 2017) PB - Atlantis Press SP - 1062 EP - 1066 SN - 2352-5401 UR - https://doi.org/10.2991/amcce-17.2017.190 DO - 10.2991/amcce-17.2017.190 ID - Long2017/03 ER -