RECENT DEVELOPMENTS IN ZIRCONIA THERMAL BARRIER COATINGS

Y. S. Tian, C. Z. Chen (), D. Y. Wang and Qianmao Ji
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Y. S. Tian: School of Materials Science and Engineering, Shandong University, Jinan Shandong 250061, P. R. China
C. Z. Chen: School of Materials Science and Engineering, Shandong University, Jinan Shandong 250061, P. R. China
D. Y. Wang: School of Materials Science and Engineering, Shandong University, Jinan Shandong 250061, P. R. China
Qianmao Ji: Shandong Information Technology College, Weifang Shandong 261041, P. R. China

Surface Review and Letters (SRL), 2005, vol. 12, issue 03, 369-378

Abstract: Thermal barrier coatings (TBC) are finding increasing applications in aeronautical, chemical, metallurgy industries, etc. As a ceramic material,ZrO2is one of the most widely used for TBCs owing to its excellent shock resistance, low thermal conductivity and relatively high coefficient of thermal expansion (CTE). In this paper the thermomechanical properties ofZrO2and the evolution ofZrO2-TBCs are reviewed. The failure mechanism of TBCs and corresponding methods for lengthening the lifetime of TBCs are discussed. The advantages and disadvantages of graded thermal barrier coatings (GTBC) as well as the problems to be solved in fabricating advanced TBCs are elucidated.

Keywords: Thermal barrier coatings; thermomechanical properties; zirconia (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1142/S0218625X05007207

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