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

来源：

MATERIALS LETTERS | 2020年 / 280卷 / 280期

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.

引用

页数：4

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