Microstructures and properties of thermal barrier coatings plasma-sprayed by nanostructured zirconia

被引:4
|
作者
Cui Tong [1 ]
Wang Ji-jie [2 ]
Guan Ren-guo [1 ]
Chen Li-qing [3 ]
Qiu Guan-ming [4 ]
机构
[1] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China
[2] Shenyang Inst Aeronaut Engn, Dept Mat, Shenyang 110136, Peoples R China
[3] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110004, Peoples R China
[4] Changchun Univ Sci & Technol, Sch Mat & Chem Engn, Changchun 130026, Peoples R China
关键词
nanostructured zirconia; thermal barrier coatings (TBCs); thermal shock resistance property; adhesive strength; thermal growth oxide (TGO);
D O I
10.1016/S1006-706X(08)60063-1
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
In gas turbine engine, the study of thermal barrier coatings (TBCs) has always been paid more attention because it can effectively reduce metal interface temperatures, reduce oxidation and extend life. In this paper, the microstructures and properties of TBCs plasma-sprayed by nanostructured zirconia were investigated. The TBCs had higher adhesive strength, better thermal shock resistance and micro-cracking resistance to compare with that of conventional TBCs of magnesia and yttria stabilized zirconia, which was due to closed packed structures with a small amount of laminar structures and cavities. The increase of quantities of thermal growth oxide (TGO) was mainly responsible for deteriorating the properties of TBCs.
引用
收藏
页码:116 / 120
页数:5
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