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초록
4 mol% Yttria-stabilized zirconia (4YSZ) coatings with 200 μm thick are fabricated by Electron Beam Physical Vapor Deposition (EB-PVD) for thermal barrier coating (TBC). 150 μm of NiCrAlY based bond coat is prepared by conventional APS (Air Plasma Spray) method on the NiCrCoAl alloy substrate before deposition of top coating. 4 mol% YSZ top coating shows typical tetragonal phase and columnar structure due to vapor phase deposition process. The adhesion strength of coating is measured about 40 MPa. There is no delamination or cracking of coatings after thermal cyclic fatigue and shock test at 850oC.
키워드
Electron Beam Physical Vapor Deposition(EB-PVD); Yttria Stabilized Zirconia(YSZ); Thermal Barrier Coating(TBC); Thermal Cyclic Fatigue
- 제목
- 전자빔을 이용한 물리기상증착법으로 제조된 열차폐용4 mol% YSZ 코팅의 내열특성
- 제목 (타언어)
- Thermal Durability of 4YSZ Thermal Barrier Coating Deposited by Electron Beam PVD
- 저자
- 박찬영; 양영환; 김성원; 이성민; 김형태; 임대순; 장병국; 오윤석
- 발행일
- 2013
- 저널명
- 한국분말야금학회지
- 권
- 20
- 호
- 6
- 페이지
- 460 ~ 466