1. Microstructure and transient laser thermal shock behavior of W–TiC–Y2O3 composites prepared by wet chemical method.
- Author
-
Xu, Meng–Yao, Luo, Lai–Ma, Lin, Jin–Shan, Xu, Yue, Zan, Xiang, Xu, Qiu, Tokunaga, Kazutoshi, Zhu, Xiao–Yong, and Wu, Yu–Cheng
- Subjects
- *
MICROSTRUCTURE , *THERMAL shock , *TUNGSTEN - Abstract
Abstract Tungsten is one of the most promising candidates for plasma-facing material for fusion. In this experiment, W–TiC–Y 2 O 3 composites were successfully prepared by the wet chemical method. The properties of the W–TiC–Y 2 O 3 composites were studied through field-emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction analysis, thermal conductivity, and transient laser thermal shock. During the sintering of the composite powder, TiC and Y 2 O 3 precipitations converted to Y-Ti-O precipitations. After transient laser thermal shock, the composites underwent melting, cracking, and resolidification, resulting in changes in surface morphology and internal structure of the composites. Graphical abstract Image 1 Highlights • W–TiC–Y 2 O 3 composites possessed excellent mechanical property and thermal shock resistance. • Y 2 TiO 5 , Y 2 TiO 6 , and Y 2 TiO 7 improved the mechanical properties of the material at high temperature. • The effect of different power density on material surface was analyzed. • The change of surface morphologies and internal structure due to transient thermal shock were discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF