Journal
JOURNAL OF ADVANCED CERAMICS
Volume 7, Issue 1, Pages 64-71Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s40145-017-0257-x
Keywords
ultra-high temperature ceramics (UHTCs); coating; reactive melt infiltration (RMI); alloy
Categories
Funding
- National Key Research and Development Program of China [2017YFB0703200]
- Science and Technology Commission of Shanghai Municipality [16DZ2260600]
Ask authors/readers for more resources
ZrB2-ZrC-SiC ternary coatings on C/C composites are investigated by reactive melt infiltration of ZrSi2 alloy into pre-coatings. Two different pre-coating structures, including porous B4C-C and dense C/B, are designed by slurry dip and chemical vapor deposition (CVD) process respectively. The coating prepared by reactive melt infiltration (RMI) into B4C-C presents a flat and smooth surface with a three-layer cross-sectional structure, namely interior SiC transition layer, gradient ZrB2-ZrC-SiC layer, and ZrB2-ZrC exterior layer. In comparison, the coating prepared by RMI into C/B shows a more granular surface with a different three-layer cross-sectional structure, interior unreacted B-C pre-coating layer, middle SiC layer, and exterior ZrB2-ZrC-ZrSi2 layer. The forming mechanisms of the specific microstructures in two coatings are also investigated and discussed in detail.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available