Thermal Shock Resistance of APS 8YSZ Thermal Barrier Coatings on Titanium Alloy

被引：14
作者：
Zeng, Shuibing [1 ]
Liu, Yangjia [1 ]
Fan, Xizhi [1 ]
Huang, Wenzhi [2 ]
Gu, Lijian [2 ]
Zou, Binglin [2 ]
Chen, Xiaolong [2 ]
Khan, Zuhair S. [2 ]
Zhu, Ling [1 ]
Yang, Daowu [1 ]
Cao, Xueqiang [1 ,2 ]
机构：
[1] Changsha Univ Sci & Technol, Dept Chem & Biol Engn, Changsha 410114, Hunan, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resources Utilizat, Changchun 130022, Peoples R China
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2012年 / 21卷 / 02期
关键词：
plasma spraying; thermal insulation; thermal shock; titanium alloy; 8YSZ; OXIDATION BEHAVIOR; THERMOPHYSICAL PROPERTIES; FAILURE MECHANISMS; AL COATINGS; GROWN OXIDE; DIFFUSION; TEMPERATURE; PROTECTION; NI; MICROSTRUCTURE;
D O I：
10.1007/s11666-011-9721-2
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Thermal barrier coatings (TBCs) with a typical 8YSZ ceramic top coat and CoNiCrAlY bond coat were deposited on titanium alloy substrate (Ti-6Al-4V in wt.%) by air plasma spraying. Thermal insulation and thermal shock resistance of the TBCs at different temperatures as well as their failure behavior were investigated. The results showed that the test temperature had a significant effect on thermal shock life of the TBCs. Failure of the TBCs systems was caused by the formation of crack, bond coat oxidation and elemental diffusion. The vertical cracks induced by thermal shock cycles were probably responsible for the enhancement in thermal shock resistance of the TBCs. Furthermore, elemental diffusion had a great effect on the acceleration of the TBCs failure. The TBCs could provide a good thermal protection for the titanium alloy substrate.
引用
收藏
页码：335 / 343
页数：9
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