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기계적 혼합에 의한 플라즈마 용사용 ZrO2-Y2O3 분말의 제조 및 특성 KCI 등재 SCOPUS
Fabrication and Characteristic of ZrO2-8%Y2O3 Powder for Plasma Spray Coating Manufactured by Mechanical Mixing Method
- 언어KOR
- URLhttps://db.koreascholar.com/Article/Detail/297574
pp.357-362
Thermal barrier coatings(TBCs) are being applied in many industrial fields such as thermal power generation, aviation and seasonal fields. ZrO2-Y2O3(8%) thermal spray coating powders are commercially used as thermal-barrier coating materials to protect against oxidation and corrosion of heat-resistant alloys at elevated temperatures. Currently, ZrO2-Y2O3(8%) thermal-spray powder is made using the industrial co-precipitation process, which is very complex and requires a lot of time. In this study, orthorhombic ZrO2 and Y2O3 powders were fabricated by mechanical mixing, which is more economical than the co-precipitation process. A tetragonal, yttria-stabilized zirconia(YSZ) coating-layer was produced by plasma spraying, using orthorhombic ZrO2-Y2O3(8%) powder. Our experimental results indicate that ZrO2-Y2O3(8%) mixed powder can be used economically in industry because it is no longer necessary to make this powder by liquid and gas-phase methods.
