- 专利标题： MOLTEN ALUMINUM ALLOY-PLATED STEEL SHEET HAVING EXCELLENT CORROSION RESISTANCE AND WELDABILITY, AND METHOD FOR PRODUCING SAME
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申请号： EP18892672.9申请日： 2018-12-17
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公开(公告)号： EP3730664A1公开(公告)日： 2020-10-28
- 发明人: LEE, Suk-Kyu , PARK, Il-Jeong , KIM, Myung-Soo
- 申请人： POSCO
- 申请人地址： (Goedong-dong) 6261, Donghaean-ro Nam-gu Pohang-si Gyeongsangbuk-do 37859 KR
- 专利权人： POSCO
- 当前专利权人： POSCO
- 当前专利权人地址： (Goedong-dong) 6261, Donghaean-ro Nam-gu Pohang-si Gyeongsangbuk-do 37859 KR
- 代理机构： Zech, Stefan Markus
- 优先权： KR20170177677 20171222
- 国际公布： WO2019124901 20190627
- 主分类号： C23C2/12
- IPC分类号： C23C2/12 ; C23C2/26 ; C23C2/40 ; C22C21/10 ; C22C21/02
摘要：
The present invention relates to a molten aluminum alloy-plated steel sheet having excellent corrosion resistance and weldability, and a method for producing same. A plated steel sheet according to one aspect of the present invention may be a molten aluminum alloy-plated steel sheet having excellent corrosion resistance and weldability and comprising a molten aluminum alloy plating film including: an interface alloy layer present at the interface with the steel sheet; and a plating upper layer disposed on the interface alloy layer, wherein a phase having an atomic ratio between Fe and Al of between 1:2.8-1:3.3 constitutes at least 70% by area of the phases present within 1 µm in the interface alloy layer direction from the boundary between the interface alloy layer and a base steel sheet.
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