Atmospheric plasma spray 공정으로 제조된 Y2O3 코팅층의 미세조직 및 기계적 특성에 미치는 분사 각도의 영향

황유진; 김경욱; 이호영; 권식철; 이기안

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자료유형: 학술저널

저자정보: 황유진 (인하대학교 신소재공학과) 김경욱 (인하대학교) 이호영 ((주)이에스티) 권식철 (베델원(주)) 이기안 (인하대학교)

저널정보: 한국분말야금학회 한국분말야금학회지 한국분말재료학회지 제28권 제4호

발행연도: 2021.8

수록면: 310 - 316 (7page)

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The effects of different spray angles (90°, 85°, 80°) on the microstructure and mechanical properties of a Y2O3 coating layer prepared using the atmospheric plasma spray (APS) process were studied. The powders employed in this study had a spherical shape and included a cubic Y2O3 phase. The APS coating layer exhibited the same phase as the powders. Thickness values of the coating layers were 90°: 203.7 ± 8.5 μm, 85°: 196.4 ± 9.6 μm, and 80°: 208.8 ± 10.2 μm, and it was confirmed that the effect of the spray angle on the thickness was insignificant. The porosities were measured as 90°: 3.9 ± 0.85%, 85°: 11.4 ± 2.3%, and 80°: 12.7 ± 0.5%, and the surface roughness values were 90°: 5.9 ± 0.3 μm, 85°: 8.5 ± 1.1 μm, and 80°: 8.5 ± 0.4 μm. As the spray angle decreased, the porosity increased, but the surface roughness did not show a significant difference. Vickers hardness measurements revealed values of 90°: 369.2 ± 22.3, 85°: 315.8 ± 31.4, and 80°: 267.1 ± 45.1 HV. It was found that under the condition of a 90° angle with the lowest porosity exhibited the best hardness value. Based on the aforementioned results, an improved method for the APS Y2O3 coating layer was also discussed.

#Y2O3 coating #Atmospheric plasma spray #Spray angle #Microstructure #Hardness

참고문헌 (4)

참고문헌 신청

J. Kitamura / 2008 / J. Therm. Spray Technol 17:878

R. Banal / 2005 / Mater. Trans 46:2114

D. M. Kim / 2012 / J. Ceram. Soc. Japan 120:539

김민숙 / 2019 / 서스펜션 플라즈마 스프레이 코팅법을 이용한 이트리아 코팅막 제조와 특성 / 한국결정성장학회지 29(6):359~364

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