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Fabrication and Characterization of Ceramics and Thermal Barrier Coatings of Lanthanum Zirconate with Reduced Rare-earth Contents in the La2O2-ZrO2 System
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 Title & Authors
Fabrication and Characterization of Ceramics and Thermal Barrier Coatings of Lanthanum Zirconate with Reduced Rare-earth Contents in the La2O2-ZrO2 System
Kwon, Chang-Sup; Lee, Sujin; Lee, Sung-Min; Oh, Yoon-Suk; Kim, Hyung-Tae; Jang, Byung-Koog; Kim, Seongwon;
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 Abstract
Lanthanum zirconate, , is one of the most promising candidates for next-generation thermal barrier coating (TBC) applications in high efficient gas turbines due to its low thermal conductivity and chemical stability at high temperature. In this study, bulk specimens and thermal barrier coatings are fabricated via a variety of sintering processes as well as suspension plasma spray in lanthanum zirconates with reduced rare-earth contents. The phase formation, microstructure, and thermo-physical properties of these oxide ceramics and coatings are examined. In particular, lanthanum zirconates with reduced rare-earth contents in a composite system exhibit a single phase of fluorite or pyrochlore after fabricated by suspension plasma spray or spark plasma sintering. The potential of lanthanum zirconate ceramics for TBC applications is also discussed.
 Keywords
Thermal barrier coatings(TBCs);Suspension plasma spray;Lanthanum zirconate;Phase formation;Thermophysical properties;
 Language
Korean
 Cited by
1.
열차폐코팅을 위한 희토류가 저감된 란타눔/가돌리늄 지르코네이트의 상형성 및 열물성,이수진;권창섭;이성민;오윤석;김형태;남산;김성원;

한국분말야금학회지, 2015. vol.22. 6, pp.420-425 crossref(new window)
1.
Phase Formation and Thermo-physical Properties of Lanthanum/Gadolinium Zirconate with Reduced Rare-earth Contents for Thermal Barrier Coatings, Journal of Korean Powder Metallurgy Institute, 2015, 22, 6, 420  crossref(new windwow)
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