Sealing role of B2O3 in MoSi2-CrSi2-Si/B-modified SiC coating for C/C composites

被引：55
作者：
Feng, Tao [1 ]
Li, He-Jun [1 ]
Shi, Xiao-Hong [1 ]
Yang, Xi [1 ]
Li, Yi-Xian [1 ]
Yao, Xi-Yuan [1 ]
机构：
[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
来源：
CORROSION SCIENCE | 2012年 / 60卷
基金：
中国国家自然科学基金;
关键词：
Ceramic matrix composites; Intermetallics; Oxidation; COATED CARBON/CARBON COMPOSITES; OXIDATION PROTECTION; THERMAL-EXPANSION; MICROSTRUCTURE;
D O I：
10.1016/j.corsci.2012.04.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A MoSi2-CrSi2-Si/B-modified SiC coating was prepared by two-step pack cementation. The coating could protect C/C composites from oxidation at 1173 K for 600 min and at 1873 K for 300 h and from erosion at 1873 K for 50 h, respectively. B2O3 oxidised from B-modified SiC layer could seal cracks at intermediate temperatures, resulting in improving the oxidation resistance of the coating. Large cracks caused by the bending of the coated specimens and excessive local stress resulted in the fracture of the tested specimens. (c) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4 / 9
页数：6
相关论文
共 22 条
[1]   OXIDATION PROTECTION OF CARBON-CARBON COMPOSITES USING CHEMICAL-VAPOR-DEPOSITION AND GLAZE TECHNOLOGY [J].
BUCHANAN, FJ ;
LITTLE, JA .
CORROSION SCIENCE, 1993, 35 (5-8) :1243-1250
[2]   Ultra-high-temperature ceramic coatings for oxidation protection of carbon-carbon composites [J].
Corral, Erica L. ;
Loehman, Ronald E. .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (05) :1495-1502
[3]   THERMAL EXPANSION OF AL2O3, BEO, MGO, B4C, SIC, AND TIC ABOVE 1000-DEGREES-C [J].
ENGBERG, CJ ;
ZEHMS, EH .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1959, 42 (06) :300-305
[4]   The oxidation behavior and mechanical properties of MoSi2-CrSi2-SiC-Si coated carbon/carbon composites in high-temperature oxidizing atmosphere [J].
Feng, Tao ;
Li, He-Jun ;
Fu, Qian-Gang ;
Yang, Xi ;
Wu, Heng .
CORROSION SCIENCE, 2011, 53 (12) :4102-4108
[5]   Microstructure and oxidation of multi-layer MoSi2-CrSi2-Si coatings for SiC coated carbon/carbon composites [J].
Feng, Tao ;
Li, He-Jun ;
Fu, Qian-Gang ;
Shen, Xue-Tao ;
Wu, Heng .
CORROSION SCIENCE, 2010, 52 (09) :3011-3017
[6]   AMOSi2-SiC-Si/glass oxidation protective coating for carbon/carbon composites [J].
Fu Qian-Gang ;
Li He-Jun ;
Li Ke-Zhi ;
Shi Xiao-Hong ;
Huang Min .
CARBON, 2006, 44 (15) :3361-3364
[7]   B2O3 modified SiC-MoSi2 oxidation resistant coating for carbon/carbon composites by a two-step pack cementation [J].
Fu, Qian-Gang ;
Li, He-Jun ;
Wang, Yong-Jie ;
Li, Ke-Zhi ;
Shi, Xiao-Hong .
CORROSION SCIENCE, 2009, 51 (10) :2450-2454
[8]   A Si-Mo-W Coating to Protect SiC-Coated Carbon/Carbon Composites Against Oxidation [J].
Fu, Qian-Gang ;
Li, He-Jun ;
Li, Ke-Zhi ;
Tong, Ke .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2009, 92 (09) :2132-2135
[9]  
HALBIG MC, 2000, NASATM2000210223, P4
[10]   A simple model for the oxidation of carbon-containing composites [J].
Hou, Xin-mei ;
Chou, Kuo-Chih .
CORROSION SCIENCE, 2010, 52 (03) :1093-1097
123