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 |
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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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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. 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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. 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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.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.ceramint.2015.02.141</doi><tpages>7</tpages></addata></record> |
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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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