Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of TiO2 Content on High-Temperature Degradation Behavior of Nd2O3 and Yb2O3-Doped YSZ Composite Materials

TiO2 첨가량에 따른 Nd2O3, Yb2O3 첨가 YSZ 복합 소재의 고온 열화거동 분석

  • Gye-Won Lee (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Seonung Choi (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Tae-jun Park (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Jong-il Kim (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology) ;
  • In-hwan Lee (Department of Materials Science and Engineering, Korea University) ;
  • Yoon-seok Oh (Engineering Materials Center, Korea Institute of Ceramic Engineering and Technology)
  • 이계원 (한국세라믹기술원 엔지니어링소재센터) ;
  • 최선웅 (한국세라믹기술원 엔지니어링소재센터) ;
  • 박태준 (한국세라믹기술원 엔지니어링소재센터) ;
  • 김종일 (한국세라믹기술원 엔지니어링소재센터) ;
  • 이인환 (고려대학교 신소재공학과) ;
  • 오윤석 (한국세라믹기술원 엔지니어링소재센터)
  • Received : 2024.08.26
  • Accepted : 2024.10.17
  • Published : 2024.10.28
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Abstract

Hot section components of gas turbines are exposed to a high operating temperature environment. To protect these components, thermal barrier coatings (TBC) are applied to their surfaces. Yttria-stabilized zirconia (YSZ), which is widely used as a TBC material, faces limitations at temperatures above 1200 ℃. To mitigate these issues, research has focused on adding lanthanide rare earth oxides and tetravalent oxides to prevent the phase-transformation of the monoclinic phase in zirconia. This study investigated the effects of varying TiO2 content in Nd2O3 and Yb2O3 co-doped YSZ composites. Increasing TiO2 content effectively suppressed formation of the monoclinic phase and increased the thermal degradation resistance compared to YSZ in environments over 1200 ℃. These findings will aid in developing more thermally stable and efficient TBC materials for application in high-temperature environments.

Keywords

Acknowledgement

본 연구는 민군협력진흥원 민군겸용기술개발사업(20-CM-CE-14)의 연구지원으로 수행되었습니다.

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