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Fabrication and Characterization of La2Zr2O7/YSZ Double-Ceramic-Layer Thermal Barrier Coatings Fabricated by Suspension Plasma Spray
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 Title & Authors
Fabrication and Characterization of La2Zr2O7/YSZ Double-Ceramic-Layer Thermal Barrier Coatings Fabricated by Suspension Plasma Spray
Kwon, Chang-Sup; Lee, Sujin; Lee, Sung-Min; Oh, Yoon-Suk; Kim, Hyung-Tae; Jang, Byung-Koog; Kim, Seongwon;
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 Abstract
Rare-earth zirconates, such as and , have been investigated as one of the candidates for replacing conventional yttria-stabilized zirconia (YSZ) for thermal barrier coating (TBC) applications at higher turbine inlet temperatures. In this study, double-ceramic-layer (DCL) TBCs of YSZ 1st layer and top coat layer are fabricated by suspension plasma spray with serial liquid feeders. Microstructures, hardness profiles, and thermal durability of DCL-TBCs are also characterized. Fabricated DCL-TBCs of YSZ/ exhibit excellent properties, such as adhesion strength (>25 MPa) and electrical thermal fatigue (~1429 cycles), which are comparable with TBCs fabricated by atmospheric plasma spray.
 Keywords
Thermal barrier coatings (TBCs);Double ceramic layer;Rare-earth zirconate;Suspension plasma spray;
 Language
Korean
 Cited by
1.
서스펜션 플라즈마 용사법으로 제조한 La2Zr2O7, (La0.5Gd0.5)2Zr2O7, Gd2Zr2O7 열차폐코팅의 상형성과 열전도 특성,김선주;이성민;오윤석;김형태;장병국;김성원;

한국표면공학회지, 2016. vol.49. 6, pp.604-611 crossref(new window)
2.
서스펜션의 준비방법에 따른 서스펜션 플라즈마 용사를 이용한 La2O3-Gd2O3-ZrO2 계 열차폐코팅의 제조와 특성,이소율;이성민;오윤석;김형태;남산;김성원;

한국표면공학회지, 2016. vol.49. 6, pp.595-603 crossref(new window)
1.
Phase Formation and Thermal Diffusivity of Thermal Barrier Coatings of La2Zr2O7, (La0.5Gd0.5)2Zr2O7, Gd2Zr2O7Fabricated by Suspension Plasma Spray, Journal of the Korean institute of surface engineering, 2016, 49, 6, 604  crossref(new windwow)
2.
Fabrication and Characteristics of Thermal Barrier Coatings in the La2O3-Gd2O3-ZrO2System by Using Suspension Plasma Spray with Different Suspension Preparations, Journal of the Korean institute of surface engineering, 2016, 49, 6, 595  crossref(new windwow)
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