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Proceedings Paper

Three-dimensional structure analysis of EB-PVD thermal barrier coatings
Author(s): Yuqi Gu; Bo Ao; Guanhua Wu; Wei Wu
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Paper Abstract

The three-dimensional structure of thermal barrier coatings has an important effect on its performance. Thermal barrier coatings prepared by electron beam physical vapor deposition (EB-PVD) was investigated, and a hightemperature oxidation experiment at 1050℃ was carried out, three-dimensional(3D) imaging were performed by micro- CT and focused ion beam-scanning electron microscopy, and the three-dimensional structure of EB-PVD thermal barrier coatings was obtained. Three-dimensional distribution of thermally grown oxide, inter-diffusion zone, pores, microcracks were obtained, and the thickness of TGO and micro-cracks were quantitatively analyzed. The results show that the TGO thickness analyzed by micro-CT and FIB-SEM are consistent with SEM results, the average depth of microcracks is 0.14 μm, and the micro-cracks only can be observed by a higher resolution micro-CT.

Paper Details

Date Published: 10 May 2019
PDF: 6 pages
Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 110682L (10 May 2019); doi: 10.1117/12.2524751
Show Author Affiliations
Yuqi Gu, Nanchang Hangkong Univ. (China)
Bo Ao, Nanchang Hangkong Univ. (China)
Guanhua Wu, Nanchang Hangkong Univ. (China)
Wei Wu, Nanchang Hangkong Univ. (China)

Published in SPIE Proceedings Vol. 11068:
Second Symposium on Novel Technology of X-Ray Imaging
Yangchao Tian; Tiqiao Xiao; Peng Liu, Editor(s)

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