1. Mo–Si–B ALLOYS OXIDATION PROTECTIVE COATING FOR SiC-COATED CARBON/CARBON COMPOSITES.
- Author
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Feng, Tao, Li, He-Jun, Fu, Qian-Gang, Shi, Xiao-Hong, and Li, Ke-Zhi
- Subjects
- *
CARBON composites , *COATING processes , *OXIDATION , *CREEP (Materials) , *CORROSION resistant materials - Abstract
A novel Mo–Si–B double-layer coating was prepared for the carbon/carbon (C/C) composites by pack cementation in an argon atmosphere. The structures of the double-layer coatings were characterized by XRD and SEM. The as-received coating shows an excellent oxidation resistance at high and intermediate temperature. It could effectively protect C/C composites from oxidation for 30 h with a weight loss of 0.9% in air at 1873 K, and for 25 h with a weight loss of l.7% at 1173 K. The oxidation protective coating was principally due to producing eutectic glass film for decreasing oxygen diffusing through the penetrable cracks in the coating. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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