SiC-MoSi2-(Ti0.8Mo0.2)Si2 multi-composition coating for carbon/carbon composites

被引：11
作者：
Jiao, Geng-sheng [1 ]
Li, He-jun [1 ]
Li, Ke-zhi [1 ]
Wang, Chuang [1 ]
Hou, Dang-she [1 ]
机构：
[1] Northwestern Polytech Univ, CC Composites Technol Res Ctr, Sch Mat Sci & Engn, Xian 710072, Shaanxi, Peoples R China
来源：
SURFACE & COATINGS TECHNOLOGY | 2006年 / 201卷 / 06期
基金：
中国国家自然科学基金;
关键词：
carbon/carbon composites; coating; oxidation; CARBON-CARBON COMPOSITES; C/C COMPOSITES; OXIDATION; MICROSTRUCTURE;
D O I：
10.1016/j.surfcoat.2006.07.237
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
To protect carbon/carbon (C/C) composites from oxidation, a new type of oxidation protective coating has been produced by a pack cementation technique in an argon atmosphere. XRD and SEM analysis showed that the phases of the composite coating were composed of SiC, MoSi2, and (Ti0.8Mo0.2)Si-2. Oxidation test discovered that the weight loss of the SiC coated C/C was up to 11.26% after 5 h oxidation in air at 1773 K and the weight loss of the SiC-MoSi2-(Ti0.8Mo0.2)Si-2 coated C/C composites characterized by excellent thermal shock resistance was only 2.18% in the same condition for 49 h. The oxidation of the coated C/C composites was primarily due to the reaction of the C/C matrix and oxygen diffusing through the penetrable cracks in the coating. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：3452 / 3456
页数：5
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