遮熱コーティングの高温ヤング率に及ぼす熱処理の影響

抄録

Young's modulus of thermal barrier coating (TBC) is an essential mechanical property as it is required to design the superior TBC system. In this study, we evaluated Young's modulus of TBC at from room temperature to 900 °C based on the primary bending resonance of a TBC system specimen with a substrate. TBC was made by air plasma spray, and preheat treatment was applied at 1000 °C in air or vacuum. As a result, the Young's modulus of the preheat-treated TBC in air was higher than that in vacuum. It was found that the sintering is accelerated by oxygen in pre-heat treatment atmosphere.