Novel Zirconia Composite Coatings Fabricated by Twin Hybrid Plasma Spraying
With a newly established 300kW twin hybrid plasma spraying system, a peculiar layered composite zirconia coating was successfully deposited. The coating is consisting of splats and dendritic columns, which come from thermal plasma spraying and thermal plasma PVD, respectively. A 120µm-thick composite coating was deposited in 10 minutes at the corresponding growth rate of 100µm/min, if the rotation of the substrates is considered. The microstructure of such composite coatings has been characterized using a variety of microscopic techniques as part of a process optimization study.
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
H. Huang et al., "Novel Zirconia Composite Coatings Fabricated by Twin Hybrid Plasma Spraying", Materials Science Forum, Vols. 475-479, pp. 2883-2886, 2005