Microstructure and thermal cycling behavior of CeO2 coatings deposited by the electron beam physical vapor technique

Huang, Jianping, Song, Guangping, Lv, Hongzhen, Li, Yuxin, Sun, Yue, He, Xiaodong, Zhang, Sam, Fu, Yong Qing, Du, Shanyi and Li, Yibin (2013) Microstructure and thermal cycling behavior of CeO2 coatings deposited by the electron beam physical vapor technique. Thin Solid Films, 544. pp. 270-275. ISSN 0040 6090

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Official URL: http://dx.doi.org/10.1016/j.tsf.2013.03.105

Abstract

Excellent thermal shock resistance is required for thermal protection coatings experiencing high/low temperature cycles. In this paper, the pure ceria oxide coatings were deposited by electron beam physical vapor technique at different power densities. The grain orientation, morphology, hardness and thermal cycling oxidation behavior of CeO2 coatings were systematically studied. The deposition power density has remarkable influence on the preferred crystal orientation and morphology of the coatings. The heating–cooling test cycles from 1000 °C to room temperature indicate that the CeO2 coatings with the columnar structure show excellent thermal shock resistance. The hardness of the CeO2 coating varies with thermal cycling.

Item Type: Article
Uncontrolled Keywords: Cerium oxide, electron beam deposition, thermal shock resistance, orientation, hardness, scanning electron microscopy, X-ray diffraction
Subjects: F200 Materials Science
Department: Faculties > Engineering and Environment > Physics and Electrical Engineering
Depositing User: Becky Skoyles
Date Deposited: 23 Mar 2015 12:19
Last Modified: 10 Aug 2015 11:07
URI: http://nrl.northumbria.ac.uk/id/eprint/21712

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