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열차폐 코팅을 위한 지르코니아계 세라믹 소재의 기계적 특성
정규익,김태우,백문규,이기성,Jung, Kyu-Ick,Kim, Tae-Woo,Paik, Ungyu,Lee, Kee-Sung 한국세라믹학회 2006 한국세라믹학회지 Vol.43 No.8
A gas turbine blade with thermal barrier ceramic coating is operated at high temperature to increase engine efficiency. Recently, thermal barrier characteristics have been improved by advanced coating technology through microstructure control and increase of adhesion force of the coating layer. More advanced coating materials, rare earth zircon ate ceramics have been studied for replacing YSZ coatings as thermal barrier coatings. In this study, $La_2O_3,\;HfO_2,\;CeO_2,\;Gd_2O_3$ and pure or yttria stabilized zirconia were prepared. Microstructure analysis and the evaluation of mechanical properties such as Hertzian indentation and hardness test were performed.