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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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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.
Thermal barrier coatings (TBCs);Double ceramic layer;Rare-earth zirconate;Suspension plasma spray;
 Cited by
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)
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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