SiC nanowire-toughened MoSi2-SiC coating to protect carbon/carbon composites against oxidation

被引：50
|
作者：
Fu, Qian-Gang [1 ]
Li, He-Jun [1 ]
Zhang, Zheng-Zhong [1 ]
Xie-Rong, Zeng [2 ,3 ]
Li, Ke-Zhi [1 ]
机构：
[1] NW Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[2] Shenzhen Univ, Sch Mat Sci & Engn, Shenzhen 518060, Peoples R China
[3] Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; Intermetallics; Oxidation; CARBON-CARBON COMPOSITES; CHEMICAL-VAPOR INFILTRATION; NANORODS; BEHAVIOR; GROWTH;
D O I：
10.1016/j.corsci.2010.01.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To protect carbon/carbon (C/C) composites against oxidation, a SiC nanowire-toughened MoSi2-SiC coating was prepared on them using a two-step technique of chemical vapor deposition and pack cementation. SiC nanowires obtained by chemical vapor deposition were distributed random-orientedly on C/C substrates and MoSi2-SiC was filled in the holes of SiC nanowire layer to form a dense coating. After introduction of SiC nanowires, the size of the cracks in MoSi2-SiC coating decreased from 18 +/- 2.3 to 6 +/- 1.7 mu m, and the weight loss of the coated C/C samples decreased from 4.53% to 1.78%-after oxidation in air at 1500 degrees C for 110 h. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1879 / 1882
页数：4
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