Porous a-Al2O3 thermal barrier coatings with dispersed Pt particles prepared by cathode plasma electrolytic deposition
来源期刊：International Journal of Minerals Metallurgy and Materials2016年第1期
论文作者：Peng Wang Ye-dong He Shun-jie Deng Jin Zhang
文章页码：92 - 101
摘 要：Porous a-Al2O3 thermal barrier coatings（TBCs） containing dispersed Pt particles were prepared by cathode plasma electrolytic deposition（CPED）. The influence of the Pt particles on the microstructure of the coatings and the CPED process were studied. The prepared coatings were mainly composed of α-Al2O3. The average thickness of the coatings was approximately 100 μm. Such single-layer TBCs exhibited not only excellent high-temperature cyclic oxidation and spallation resistance, but also good thermal insulation properties. Porous a-Al2O3 TBCs inhibit further oxidation of alloy substrates because of their extremely low oxygen diffusion rate, provide good thermal insulation because of their porous structure, and exhibit excellent mechanical properties because of the toughening effect of the Pt particles and because of stress relaxation induced by deformation of the porous structure.
Peng Wang，Ye-dong He，Shun-jie Deng，Jin Zhang
Beijing Key Laboratory for Corrosion, Erosion and Surface Technology, University of Science and Technology Beijing
摘 要：Porous a-Al2O3 thermal barrier coatings（TBCs） containing dispersed Pt particles were prepared by cathode plasma electrolytic deposition（CPED）. The influence of the Pt particles on the microstructure of the coatings and the CPED process were studied. The prepared coatings were mainly composed of α-Al2O3. The average thickness of the coatings was approximately 100 μm. Such single-layer TBCs exhibited not only excellent high-temperature cyclic oxidation and spallation resistance, but also good thermal insulation properties. Porous a-Al2O3 TBCs inhibit further oxidation of alloy substrates because of their extremely low oxygen diffusion rate, provide good thermal insulation because of their porous structure, and exhibit excellent mechanical properties because of the toughening effect of the Pt particles and because of stress relaxation induced by deformation of the porous structure.
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