The oxidation behavior and corrosion mechanism of SiC matrix ceramics in a high temperature wet air environment

被引：2
|
作者：
Yan, Shuaibin [1 ,2 ]
Duan, Xiaoming [1 ,2 ,3 ]
Cai, Delong [5 ]
He, Peigang [1 ,2 ]
Yang, Zhihua [1 ,2 ,3 ]
Jia, Dechang [1 ,2 ,3 ]
Lin, Hua-Tay [6 ]
Zhou, Yu [1 ,2 ,3 ,4 ]
机构：
[1] Harbin Inst Technol, Inst Adv Ceram, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Harbin Inst Technol, Key Lab Adv Struct Funct Integrat Mat & Green Mfg, Harbin, Peoples R China
[3] Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China
[4] Harbin Inst Technol Shenzhen, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
[5] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Key Lab Superlight Mat & Surface Technol, Minist Educ, 145 Nantong St, Harbin 150001, Peoples R China
[6] Guangdong Univ Technol, Sch Electromech Engn, Guangzhou 510006, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2024年 / 44卷 / 15期
基金：
中国国家自然科学基金;
关键词：
SiC ceramics; H2O/Air environment; Oxidation mechanism; High temperature water vapor corrosion; SILICON-CARBIDE; SICF/SIC COMPOSITES; THERMAL-EXPANSION; AL2O3; RESISTANCE; STRENGTH;
D O I：
10.1016/j.jeurceramsoc.2024.116729
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The oxidation behavior and corrosion mechanism of SiC ceramics were investigated at high temperatures ranging from 1000 degrees C to 1200 degrees C in wet environments (75 % water/25 % air). The results demonstrate the formation of protective SiO 2 layers, which effectively inhibit further oxidation at 1000 degrees C and 1100 degrees C. However, simultaneous oxidation and water vapor corrosion occur at 1200 degrees C, leading to substantial weight loss and the development of numerous porous layers that can reach up to 30 mu m after 10 h oxidation. The YAG phases in the SiC ceramics react with SiO 2 to generate Y 2 Si 2 O 7 , Y 2 SiO 5 , and/or Al 2 Si 2 O 7 phases during oxidation process, which exhibit enhanced corrosion resistance under wet environments.
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页数：10
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