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http://dx.doi.org/10.6111/JKCGCT.2019.29.6.308

Deposition uniformity of 7 wt% YSZ as a thermal barrier coating with different configurational arrangement for turbine blade shape mock-up by electron beam physical vapor deposition  

Oh, Yoon-Suk (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
Chae, Jung-Min (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
Ryu, Ho-lim (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
Han, Yoon-Soo (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
An, Jong-Kee (Gas Turbine Development Team, Aerospace R&D Center, Hanwha Aerospace)
Son, Myung-Sook (Gas Turbine Development Team, Aerospace R&D Center, Hanwha Aerospace)
Kim, Hong-Kyu (Agency for Defense Development)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.29, no.6, 2019 , pp. 308-316 More about this Journal
Abstract
Electron beam physical vapor deposition (EBPVD) is a conventional method to fabricate thermal barrier coating (TBC) of high temperature airfoil engine parts, such as blade etc. for its high temperature structural stability from the nature of columnar growth behavior. For the high quality of TBC by EBPVD, the structural factors, such as growth behavior, thickness uniformity and so on, should be managed to obtain the coating which satisfied the required specifications of usable level of mechanical and thermal properties. In this study, the growth behavior and structure variations of 7YSZ (7 wt% yttria stabilized zirconia) coatings with different configurational deposition parameters for the specimens which have turbine blade shape mock-up were investigated. Growth behavior of coatings were studied by comparing computational modeling of evaporation behavior with actual deposition process using e-beam source.
Keywords
Thermal barrier coatings; YSZ; EBPVD; Growth behavior; Configurational arrangement;
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