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http://dx.doi.org/10.4150/KPMI.2013.20.6.445

Fabrication and Characteristics of Yttria-stabilized Zirconia (7.5 wt% Y2O3-ZrO2) Coating Deposited via Suspension Plasma Spray  

Lee, Won-Jun (Engineering Ceramic Center, Korea Institute of Ceramic & Engineering Technology)
Kwon, Chang-Sup (Engineering Ceramic Center, Korea Institute of Ceramic & Engineering Technology)
Kim, Seongwon (Engineering Ceramic Center, Korea Institute of Ceramic & Engineering Technology)
Oh, Yoon-Suk (Engineering Ceramic Center, Korea Institute of Ceramic & Engineering Technology)
Kim, Hyung-Tae (Engineering Ceramic Center, Korea Institute of Ceramic & Engineering Technology)
Lim, Dae-Soon (Department of Materials Science and Engineering, Korea University)
Publication Information
Journal of Powder Materials / v.20, no.6, 2013 , pp. 445-452 More about this Journal
Abstract
Yttria-stabilized zirconia (YSZ) coatings are fabricated via suspension plasma spray (SPS) for thermal barrier applications. Three different suspension sets are prepared by using a planetary mill as well as ball mill in order to examine the effect of starting suspension on the phase evolution and the microstructure of SPS prepared coatings. In the case of planetary-milled commercial YSZ powder, a deposited thick coating turns out to have a dense, vertically-cracked microstructure. In addition, a dense YSZ coating with fully developed phase can be obtained via suspension plasma spray with suspension from planetary-milled mixture of $Y_2O_3$ and $ZrO_2$.
Keywords
Thermal barrier coatings; Yttria-stabilized zirconia(YSZ); Suspension plasma spray; Vertically-cracked structure; Planetary mill;
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