This paper is to investigate the effects of laser-treatment for thermal barrier coating(TBC) layers. The two-layer TBC are composed of CoNiCrAlY bond coating by vacuum plasma spray process and ZrO₂-8wt%Y₂O₃ ceramic coating layer by atmosphere pl...
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https://www.riss.kr/link?id=A109100351
2007
Korean
003
학술저널
484-489(6쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
This paper is to investigate the effects of laser-treatment for thermal barrier coating(TBC) layers. The two-layer TBC are composed of CoNiCrAlY bond coating by vacuum plasma spray process and ZrO₂-8wt%Y₂O₃ ceramic coating layer by atmosphere pl...
This paper is to investigate the effects of laser-treatment for thermal barrier coating(TBC) layers. The two-layer TBC are composed of CoNiCrAlY bond coating by vacuum plasma spray process and ZrO₂-8wt%Y₂O₃ ceramic coating layer by atmosphere plasma spray process. The Nd:YAG laser(wavelength 1.06㎛, 60W) was used for laser-treatment to coating surfaces. Different scanning speed and power were set to each sample and the surface structure was investigated by acoustic emission monitoring system. The microstructure and surface morphology were analyzed by SEM and XRD. The thermally grown oxide(TGO) behavior was evaluated by thermal oxidation test. In case of laser treated TBC, the re-melted coating layer appeared newly on the surface of coating layers and vertical crack was initiated from the surface. The thickness of TGO with laser treatment was smaller than that without laser treatment.
목차 (Table of Contents)
대면적 나노 임프린트 리소그래피를 위한 정렬장치의 개발