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Influence of preparation technology on the microstructure and anti-oxidation property of SiC–Al2O3–mullite multi-coatings for carbon/carbon composites
- Source :
-
Applied Surface Science . Apr2006, Vol. 252 Issue 12, p4244-4249. 6p. - Publication Year :
- 2006
-
Abstract
- Abstract: Oxidation protective SiC–Al2O3–mullite multi-coatings for carbon/carbon (C/C) composites were prepared with a two-step pack cementation process. The influence of preparation temperature and SiO2/Al2O3 ratio of the pack powder on the phase, microstructure and oxidation resistance of the multi-coatings were investigated. It showed that the multi-coatings that contained mullite could be produced at 1700–1800°C. A denser coating surface was acquired with the decrease of SiO2/Al2O3 ratio in the pack chemistries while a little damnification to the interface of the coating and C/C substrate. The as-prepared coating could effectively protect C/C composites from oxidation at 1600°C for 81h. [Copyright &y& Elsevier]
- Subjects :
- *CARBON
*COATING processes
*THIN films
*COMPOSITE materials
Subjects
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 252
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 20726338
- Full Text :
- https://doi.org/10.1016/j.apsusc.2005.07.004