Feather-like Structured YSZ Coatings at Fast Rates by Plasma Spray Physical Vapor Deposition

被引：0
|
作者：
A. Shinozawa
K. Eguchi
M. Kambara
T. Yoshida
机构：
[1] The University of Tokyo,Department of Materials Engineering
来源：
Journal of Thermal Spray Technology | 2010年 / 19卷
关键词：
plasma spray; porosity; thermal barrier coating; thermal conductivity; yttria-stabilized zirconia;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A variety of yttria-stabilized zirconia (YSZ) coatings have been attained by plasma spray physical vapor deposition (PS-PVD) with fine YSZ powders at high power. The coating structures were found to change significantly with the powder feeding rates but less with the substrate temperature and the rate of the substrate rotation, and a porous feather like structure was attained at 500 Torr (666.6 millibar) and a rate of >200 μm/min. Such a coating produces porosity reaching >50%, thermal conductivity as small as 0.5 W/mK and lower infra-red transmittance compared to the sprayed splat coating with identical thickness.
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页码：190 / 197
页数：7
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