A-22 1100℃級ガスタービン初段動翼コーティング材の劣化・損傷解析(材料・計測,一般講演)

概要

論文の詳細を見る
According to increasing the inlet temperature of gas turbine, the role of coating is getting more important not only coating life but also bucket life itself. The resistance to the cracking become one of the most important factors and it is generally reported to have relationship with coating ductility. Four kinds of different coatings, such as Pt-Al diffusion coating and CoCrAlY, aluminized CoCrAlY and CoNiCrAlY overlay coatings, in the 1,100℃-class gas turbines stage 1 buckets serviced for around 10^4 hours were investigated with 3-point bend tests at elevated temperatures. There was found to be very profound relationship between the serviced bucket coating cracking behaviors and coating ductility of the ductile-to-brittle transition temperatures and the strain-to-cracking.
社団法人日本ガスタービン学会の論文
2004-10-01