Improved thermal fatigue resistance in thermal barrier coatings via suspension plasma spray technique

被引:6
|
作者
Yamazaki, Yasuhiro [1 ]
Matsuura, Satoshi [2 ]
Hamaguchi, Tatsuya [3 ]
Nagai, Masaya [3 ]
Habu, Yoichiro [4 ]
机构
[1] Chiba Univ, Grad Sch Engn, Inage Ku, 1-33 Yayoi Cho, Chiba 26838522, Japan
[2] Chiba Univ, Grad Sch Sci & Engn, Inage Ku, 1-33 Yayoi Cho, Chiba 26838522, Japan
[3] TOCALO Co Ltd, Tokyo Plant, Prod Tech Dept, 1-1-1 Gyoda, Funabashi, Chiba, Japan
[4] TOCALO Co Ltd, R&D Labs, 14-3 Minamifutami,Futami Cho, Akashi, Hyogo, Japan
关键词
Suspension plasma spray; Columnar microstructure; Thermally grown oxide; Fatigue; Thick films;
D O I
10.1016/j.matlet.2020.128608
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The thermal cycle fatigue behavior of a suspension plasma-sprayed thermal barrier coating (SPS-TBC) with cauliflower-like columnar microstructure was investigated. The damage behavior of SPS-TBC was investigated compared with a conventional atmospheric plasma-sprayed (APS-) TBC. The thermally grown oxide (TGO) grew at the interface between the top- and bond-coats during not only the isothermal oxidation but also the thermal cycle fatigue. In the SPS-TBC, the growth of mixed oxide-type TGO can be suppressed. Additionally, the columnar structure of the SPS-TBC can prevent the propagation of delam-ination crack from the specimen edge promoted by thermal cycles. These results suggested that the SPS-TBC had superior thermal fatigue resistance because of its columnar structure. (C) 2020 Elsevier B.V. All rights reserved.
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页数:4
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