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논문 기본 정보

자료유형
학술저널
저자정보
Jong-Sang Kim (POSTECH) Suk-Kyu Lee (POSCO) Doo-Jin Paik (POSCO)
저널정보
한국부식방식학회 Corrosion Science and Technology CORROSION SCIENCE AND TECHNOLOGY Vol.23 No.4
발행연도
2024.8
수록면
296 - 301 (6page)
DOI
10.14773/cst.2024.23.4.296

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초록· 키워드

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Steels have excellent mechanical properties and weldability. They are also economically producible. Thus, they are widely applied in various industries. However, they have a disadvantage in that rust can occur after a certain period of time. To compensate for this, Zn, which has excellent sacrificial corrosion resistance, can be coated on steels. With global zinc consumption increasing at the current rate, depletion is expected in the near future. Recently, POSCO has developed innovative Al-Zn-Si alloy coated steel sheets with better corrosion resistance than Zn coating. In this study, corrosion resistance, weldability, friction characteristics, and so on were evaluated compared to GI steel sheets to evaluate their applicability to automotive steel sheets. It showed excellent corrosion resistance even at a lower coating weight compared to GI steel sheet. It was also excellent in terms of galling and welding LME. Its spot welding life, electrodeposition coating, and bendability were equally excellent. This is presumed to be related to the formation of the Al-Zn-Si alloy phase at the interface of the coating layer.

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