Microstructure and mechanical properties of yttria stabilized zirconia coatings prepared by plasma spray physical vapor deposition

Plasma spray physical vapor deposition (PS-PVD) was used to deposit yttria stabilized zirconia (YSZ) coatings with different columnar morphologies by varying the spray distance. Although similar quasi-columnar structures were formed at the spray distances of 600mm and 1400mm, the formation mechanism...

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Veröffentlicht in:Ceramics international 2015-08, Vol.41 (7), p.8305-8311
Hauptverfasser: Gao, Lihua, Guo, Hongbo, Wei, Liangliang, Li, Chenyi, Gong, Shengkai, Xu, Huibin
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container_end_page 8311
container_issue 7
container_start_page 8305
container_title Ceramics international
container_volume 41
creator Gao, Lihua
Guo, Hongbo
Wei, Liangliang
Li, Chenyi
Gong, Shengkai
Xu, Huibin
description Plasma spray physical vapor deposition (PS-PVD) was used to deposit yttria stabilized zirconia (YSZ) coatings with different columnar morphologies by varying the spray distance. Although similar quasi-columnar structures were formed at the spray distances of 600mm and 1400mm, the formation mechanisms of particles in the coatings were different. Besides, an electron beam physical vapor deposition (EB-PVD) like columnar coating out of pure vapor was deposited at a spray distance of 1000mm and the columnar consisted of elongated nano-sized secondary columns. The hardness and Young׳s modulus of the coatings were investigated. Compared to the other two quasi-columnar structures, the EB-PVD like columnar coating exhibited higher hardness (~9.0GPa ) and Young׳s modulus (~110.9GPa), mainly due to its low porosity and defect.
doi_str_mv 10.1016/j.ceramint.2015.02.141
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source ScienceDirect Journals (5 years ago - present)
subjects Coatings
Columns (structural)
Deposition
Microstructure
Physical vapour deposition
Plasma spray physical vapor deposition (PS-PVD)
Sprayers
Sprays
Thermal barrier coatings (TBCs)
Young׳s modulus
Yttria stabilized zirconia
Yttria stabilized zirconia (YSZ)
Zirconium dioxide
title Microstructure and mechanical properties of yttria stabilized zirconia coatings prepared by plasma spray physical vapor deposition
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