著者

大木 基史 武藤 睦治 大原 稔 高橋 雅士 石橋 達弥

出版者

社団法人溶接学会

雑誌

溶接学会論文集 : quarterly journal of the Japan Welding Society (ISSN:02884771)

巻号頁・発行日

vol.16, no.3, pp.395-404, 1998-08-05

参考文献数

18

被引用文献数

8

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Two kinds of thermal cycle tests with short (10 min) and long (23h) holding times were carried out to investigate thermal cycling damage characteristics and thermal barrier property of thermal barrier coatings (TBCs). Surface cracks vertical to the coating surface were nucleated due to thermal stress during both the thermal cycle tests. Holding time had no significant influence on the surface cracking behavior. On the other hand, holding time had a significant influence on the thermal barrier property, which was degraded with increasing total holding time. The degradation of thermal barrier property was caused by the decrease in porosity and hence by the increase in density of ceramic layer.