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公开(公告)号：US20220341017A1
公开(公告)日：2022-10-27
申请号：US17762533
申请日：2020-09-24
申请人： POSCO , STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION , POSCO COATED & COLOR STEEL CO., LTD.
发明人： Sung-Joo Kim , Kyung-Kwan Park , Moon-Hi Hong , Heung-Yun Kim , Tae-Yeul Park , Myung-Soo Kim , Il-Ryoung Sohn , Tae-Chul Kim , Dae-Young Kang
摘要： Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
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公开(公告)号：US12054829B2
公开(公告)日：2024-08-06
申请号：US17762533
申请日：2020-09-24
申请人： POSCO , STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION , POSCO COATED & COLOR STEEL CO., LTD.
发明人： Sung-Joo Kim , Kyung-Kwan Park , Moon-Hi Hong , Heung-Yun Kim , Tae-Yeul Park , Myung-Soo Kim , Il-Ryoung Sohn , Tae-Chul Kim , Dae-Young Kang
IPC分类号： C23C2/06 , B32B15/01 , B32B15/04 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/00 , C23C2/02 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： C23C2/06 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/0035 , C23C2/02 , C23C2/285 , C23C2/29 , C23C2/40 , C23C28/02 , C23C28/021 , C23C28/023 , C23C28/025 , C23C28/322 , C23C28/3225 , C23C30/00 , C23C30/005 , Y10T428/12951 , Y10T428/12958 , Y10T428/12972 , Y10T428/12979 , Y10T428/12993 , Y10T428/24942 , Y10T428/24983 , Y10T428/263 , Y10T428/265
摘要： Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
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公开(公告)号：US20240344191A1
公开(公告)日：2024-10-17
申请号：US18735892
申请日：2024-06-06
申请人： POSCO CO., LTD , STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION , POSCO COATED & COLOR STEEL CO., LTD.
发明人： Sung-Joo Kim , Kyung-Kwan Park , Moon-Hi Hong , Heung-Yun Kim , Tae-Yeul Park , Myung-Soo Kim , Il-Ryoung Sohn , Tae-Chul Kim , Dae-Young Kang
IPC分类号： C23C2/06 , B32B15/01 , B32B15/04 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/00 , C23C2/02 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： C23C2/06 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/0035 , C23C2/02 , C23C2/285 , C23C2/29 , C23C2/40 , C23C28/02 , C23C28/021 , C23C28/023 , C23C28/025 , C23C28/322 , C23C28/3225 , C23C30/00 , C23C30/005 , Y10T428/12799 , Y10T428/12951 , Y10T428/12958 , Y10T428/12972 , Y10T428/12979 , Y10T428/12993 , Y10T428/24942 , Y10T428/2495 , Y10T428/24959 , Y10T428/24967 , Y10T428/24975 , Y10T428/24983 , Y10T428/26 , Y10T428/263 , Y10T428/264 , Y10T428/265
摘要： Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
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公开(公告)号：US12006576B2
公开(公告)日：2024-06-11
申请号：US17762533
申请日：2020-09-24
申请人： POSCO , STEEL & CONVERGENCE TECHNOLOGY RESEARCH ASSOCIATION , POSCO COATED & COLOR STEEL CO., LTD.
发明人： Sung-Joo Kim , Kyung-Kwan Park , Moon-Hi Hong , Heung-Yun Kim , Tae-Yeul Park , Myung-Soo Kim , Il-Ryoung Sohn , Tae-Chul Kim , Dae-Young Kang
IPC分类号： C23C2/06 , B32B15/01 , B32B15/04 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/00 , C23C2/02 , C23C2/28 , C23C2/40 , C23C28/00 , C23C28/02 , C23C30/00
CPC分类号： C23C2/06 , B32B15/01 , B32B15/013 , B32B15/04 , B32B15/043 , B32B15/18 , C21D7/06 , C22C18/00 , C22C18/04 , C23C2/0035 , C23C2/02 , C23C2/285 , C23C2/29 , C23C2/40 , C23C28/02 , C23C28/021 , C23C28/023 , C23C28/025 , C23C28/322 , C23C28/3225 , C23C30/00 , C23C30/005 , Y10T428/12951 , Y10T428/12958 , Y10T428/12972 , Y10T428/12979 , Y10T428/12993 , Y10T428/24942 , Y10T428/24983 , Y10T428/263 , Y10T428/265
摘要： Provided are a plated steel sheet and a method for manufacturing same, the plated steel sheet comprising: a base steel sheet; a Zn—Mg—Al plating layer provided on at least one surface of the base steel sheet; and an Fe—Al inhibition layer provided between the base steel sheet and the Zn—Mg—Al plating layer. The plating layer comprises, by weight %, 4 to 10% of Mg and 5.1-25% of Al and the remainder being Zn and unavoidable impurities with respect to components not including iron (Fe) diffused from the base steel sheet. The plating layer comprises a 24-50% MgZn2 phase in phase fraction. In the MgZn2 phase, an Al single phase is present in the ratio of 1-30% relative to the cross-sectional area of the total MgZn2 phase.
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公开(公告)号：US09963758B2
公开(公告)日：2018-05-08
申请号：US15250120
申请日：2016-08-29
申请人： POSCO
发明人： Il-Ryoung Sohn , Dae-Chul Bae , Heung-Yun Kim
IPC分类号： C23C2/40 , C23C2/28 , C23C2/12 , C22C38/32 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/28 , B32B15/01 , C21D9/46 , C21D8/02 , C22F1/043
CPC分类号： C21D9/46 , B32B15/012 , C21D8/0226 , C21D8/0236 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/28 , C22C38/32 , C22F1/043 , C23C2/12 , C23C2/285 , C23C2/40 , Y10T428/1275 , Y10T428/12757 , Y10T428/12764 , Y10T428/12972 , Y10T428/12979 , Y10T428/2495 , Y10T428/24967 , Y10T428/263 , Y10T428/264 , Y10T428/265
摘要： Provided is a hot press-formed (HPF) member with excellent powdering resistance at the time of press forming. The HPF member includes a hot-dip coating layer containing Al on a surface of a base steel sheet. The base steel sheet includes, based on wt %, 0.18-0.25% of C, 0.1-1.0% of Si, 0.9-1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01-0.05% of Al, 0.05-0.5% of Cr, 0.01-0.05% of Ti, 0.001-0.005% of B, 0.009% or less of N, the balance Fe, and the other impurities. The hot-dip coating layer comprises a soft diffusion layer and a hard alloy layer. The alloy layer has a Tau phase in the range of 10-30%, in terms of area percent.
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公开(公告)号：US11572607B2
公开(公告)日：2023-02-07
申请号：US16956743
申请日：2018-12-20
申请人： POSCO
发明人： Heung-Yun Kim , Myung-Soo Kim
IPC分类号： C22C18/04 , C23C2/06 , C23C2/14 , C23C2/26 , C23C2/18 , C23C2/02 , C23C30/00 , C23C2/40 , C23C2/28 , B32B15/01 , C22C18/00 , B32B15/04 , B32B15/18
摘要： Provided is a plated steel to be used for automobiles, electric home appliances, building materials and the like and, more specifically, to a zinc alloy-plated steel having excellent corrosion resistance and surface smoothness, and a method for manufacturing the same.
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公开(公告)号：US20230032557A1
公开(公告)日：2023-02-02
申请号：US17786263
申请日：2020-12-01
申请人： POSCO
发明人： Heung-Yun Kim , Sung-Joo Kim
摘要： An embodiment of the present disclosure provides a hot dip alloy coated steel material having high corrosion resistance, the hot dip alloy coated steel material including: a base steel sheet; and a hot dip alloy coating layer formed on the base steel sheet, wherein the hot dip alloy coating layer includes, by wt %, Al: from greater than 8% to 25%, Mg: from greater than 4% to 12%, and a balance of Zn and other inevitable impurities, wherein a surface of the hot dip alloy coating layer has a surface X-ray diffraction intensity satisfying Condition 1 below: [Condition 1] 2000 cps≤X-ray diffraction intensity≤20000 cps where the X-ray diffraction intensity refers to M−N, M refers to a greatest peak intensity within a 2θ range of 20.00° to lower than 21°, and N refers to a peak intensity at 2θ=20.00°.
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公开(公告)号：US11618939B2
公开(公告)日：2023-04-04
申请号：US17296787
申请日：2019-11-27
申请人： POSCO
发明人： Do-Kyeong Han , Heung-Yun Kim
IPC分类号： C22C18/04 , C23C2/06 , C23C2/26 , C23C2/20 , B32B15/01 , C23C28/02 , C23C30/00 , C22C30/06 , C22C21/10 , B32B15/04 , B32B15/18 , C23C2/40 , C23C2/12 , C23C2/04 , C22C18/00
摘要： Provided is a galvanized steel sheet having excellent plating adhesion, having a plated layer with improved friction characteristics by means of a predetermined level of Fe elution, and having excellent corrosion resistance; and a manufacturing method therefor.
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公开(公告)号：US11420419B2
公开(公告)日：2022-08-23
申请号：US16063808
申请日：2016-12-22
申请人： POSCO
发明人： Young-Ha Kim , Hyeon-Seok Hwang , Kwang-Geun Chin , Heung-Yun Kim
IPC分类号： B32B15/01 , C23C2/12 , C23C2/28 , C23C2/40 , C22C38/04 , C22C38/12 , C22C38/10 , C22C38/06 , C22C38/14 , C22C38/02 , C22C38/00 , C21D6/00 , C23C2/02 , C21D9/46 , C22C21/00 , C22C21/02 , C22C38/18 , C22C38/60 , C22C38/24 , C22C38/46 , C22C38/48 , C22C21/06 , C22C38/22 , B32B15/04 , C22C38/50 , C22C21/04 , C23C28/02 , B32B15/18 , C22C38/28 , C22C38/44 , C23C30/00 , C22C38/26
摘要： Provided are an austenite-based molten aluminum-plated steel sheet comprising: a steel plate which contains, by weight %, 0.3 to 0.9% of C, 12 to 25% of Mn, 0.5 to 2.5% of Si, 0.3 to 3.0% of Al, 0.01 to 0.5% of Ti, 0.05 to 0.5% of V, 0.01-0.5% of Mo, 0.01-0.2% of Sn, 0.001-0.1% of Co, and 0.001-0.1% of W, the remainder being Fe and unavoidable impurities; and a molten aluminum-based plated layer formed on a surface of the steel plate, and a method for producing the same.
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公开(公告)号：US10968506B2
公开(公告)日：2021-04-06
申请号：US16064735
申请日：2016-12-23
申请人： POSCO
发明人： Heung-Yun Kim , Hyeon-Seok Hwang , Young-Ha Kim
IPC分类号： C23C2/12 , C23C2/40 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/00 , C22C38/38 , C23C2/28 , C22C38/14 , C22C38/12 , B32B15/01 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32
摘要： Provided is a high-manganese hot-dip aluminum-coated steel sheet comprising: a base steel sheet containing, by weight, 5% to 35% of Mn, 0.3 to 6% of Al, 0.1 to 1.2% of Si, the balanced amount of Fe, and inevitable impurities; a hot-dip aluminum-coated layer, formed on a surface of the base steel sheet, containing, by weight, 3 to 12% of Si and the balanced amount of Al, and inevitable impurities; and an alloy layer, 0.1 to 10 μm in thickness with a Fe—Al—Si—Mn-based alloy phase on an interface between the base steel sheet and the hot-dip aluminum-coated layer, containing, by weight, 40 to 70% of Al, 2 to 13% of Si, 3 to 9% of Mn, the balance amount of Fe, and inevitable impurities.
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