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Microstructure and transient laser thermal shock behavior of W–TiC–Y2O3 composites prepared by wet chemical method.
- Source :
-
Journal of Alloys & Compounds . Oct2018, Vol. 766, p784-790. 7p. - Publication Year :
- 2018
-
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]
- Subjects :
- *MICROSTRUCTURE
*THERMAL shock
*TUNGSTEN
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 766
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 131787739
- Full Text :
- https://doi.org/10.1016/j.jallcom.2018.07.046