YTTRIA-STABILIZED ZIRCONIA THERMAL BARRIER COATINGS — A REVIEW

L. B. Chen ()
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L. B. Chen: School of Materials Science and Engineering, Shandong University, Ji'nan 250061, P. R. China

Surface Review and Letters (SRL), 2006, vol. 13, issue 05, 535-544

Abstract: Thermal barrier coatings (TBCs), which protect metallic components from high-temperature environments, have been widely applied to the fields of high-temperature and corrosion-resistant structural parts such as gas turbine engines, diesel engines, and power generation systems. Yttria-stabilized zirconia (YSZ) is one of the most widely used materials for TBCs owing to its excellent shock resistance, low-thermal conductivity, and relatively high coefficient of thermal expansion. In this paper the properties of YSZ and the recent developments of YSZ-TBCs are reviewed. The failure mechanism of YSZ-TBCs and corresponding methods for lengthening the lifetime of YSZ-TBCs are discussed. The advantages of graded thermal barrier coatings and the problems in processing are elucidated.

Keywords: Progress; thermomechanical properties; YSZ-TBCs (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1142/S0218625X06008670

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