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논문 기본 정보

자료유형
학술저널
저자정보
박진성 (순천대학교) 윤덕빈 (순천대학교) 김상헌 (MEC) 김태엽 (한국해양대학교) 김성진 (순천대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제56권 제1호
발행연도
2023.2
수록면
69 - 76 (8page)

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초록· 키워드

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The effects of hairline treatment on surface blackening and thermal diffusion behaviors of Zn-Al-Mg alloy coated steel sheet were evaluated by the three-dimensional surface profiler and laser-flash technique. The metallographic observation of coating damages by hairline treatments showed that several cracks were initiated and propagated along the interface between primary Zn/eutectic phases. As the hairline processing became more severe, the crack occurrence frequency in eutectic phase of coating layer and the surface roughness increased, which had a proportional relationship with the level of blackening on the coating surface. In addition, the higher interfacial areas of the blackened coating surface, caused by the hairline process, led to an increase in thermal diffusivity and conductivity of the coated steel sheet. On the other hand, when the coating damage by hairline treatment was excessive and the steel substrate was exposed, there was little difference between the thermal diffusivity/conductivity of the untreated sample though the blackening degree was higher than that of untreated sample. This work suggests that the increase in the surface areas of the coating layer without exposure to steel substrate through hairline treatment can be one of the effective technical strategies for the development of Zn-Al-Mg alloy coated steel sheets with higher blackening level and thermal diffusivity.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
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