Failure Characteristics of Thermal Barrier Ceramic Coating at High Temperature(High Temperature Materials)

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概要

• 論文の詳細を見る

• The paper presents the experimental investigation on the fracture of thermal barrier ceramic coating (TBC) at high temperature. The fracture was induced by temperature gradient along TBC system thickness direction and oxidation between TBC and bond coat. Laser heating method was used to simulate the operating state of TBC system. Both micro-observation and acoustic emission (AE) detection revealed that fatigue crack was in two forms: surface crack and interface delamination. One can understand the failure mechanism from the plane of TBC surface temperature and substrate surface temperature. It was found that the life of thermal fatigue was reduced by the formation of alumina at interface. On the other hand, it was found that the temperature gradient between inner and outer surface of specimen accelerated the growth of alumina layer.

• 一般社団法人日本機械学会の論文
• 2001-10-20

著者

• HASHIDA T.

  Fracture Research Institute, Tohoku University

• Zhou Y.

  Fracture Research Institute Tohoku University:institute Of Fundamental Mechanics And Material Engine

関連論文

• Residual Stress in PZT Thin Film Determined by Indentation Fracture Method(Thin Films)
• Failure Characteristics of Thermal Barrier Ceramic Coating at High Temperature(High Temperature Materials)
• SB-12-2(052) Thermal Fatigue in Thermal Barrier Coating(Thermo-Mechanical Fatigue of Superalloys & Coatings)

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