Thermal Durability of 4YSZ Thermal Barrier Coating Deposited by Electron Beam PVD
전자빔을 이용한 물리기상증착법으로 제조된 열차폐용 4 mol% YSZ 코팅의 내열특성

Chanyoung Park, Younghwan Yang, Seongwon Kim, Sungmin Lee, Hyungtae Kim, Daesoon Lim, Byungkoog Jang, Yoonsuk Oh
2013 Journal of Korean Powder Metallurgy Institute  
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
more » ... a. There is no delamination or cracking of coatings after thermal cyclic fatigue and shock test at 850 o C.
doi:10.4150/kpmi.2013.20.6.460 fatcat:ehomvgk4ajdanmzi5yeovjclq4