Development of Porous YSZ Coatings with Modified Thermal and Optical Properties by Plasma Spray Physical Vapor Deposition

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概要

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• Porous and feather-like yttria-stabilized zirconia coatings have been deposited by plasma spray physical vapor deposition (PS-PVD) at the deposition rate of around 200 µm/min. The porosity of the coating reached > 50% and the overall thermal conductivity was reduced less than 0.5 W/mK, both of which were fundamentally independent of the coating thickness up to 120 µm. Such coating structures were characterized by their high scattering coefficients at light wavelength from 2 to 6 µm, and thus the transmittance to infrared was reduced significantly compared to the splat structure coating with the identical thickness. The thermal properties of these coatings were retained even after annealing at temperature ∼1500°C for 130 hours.

• 一般社団法人 日本機械学会の論文

著者

• Eguchi Keisuke

  Department Of Electrical And Electronics Engineering Sophia University

• Yoshida Toyonobu

  Department Of Materials Engineering School Of Engineering The University Of Tokyo

• Kambara Makoto

  Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

• EGUCHI Keisuke

  Department of Materials Engineering, The University of Tokyo

• SHINOZAWA Akihiro

  Department of Materials Engineering, The University of Tokyo

• AOSHIKA Kiyoshi

  Department of Materials Engineering, The University of Tokyo

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