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公开(公告)号：US20240043981A1
公开(公告)日：2024-02-08
申请号：US18278429
申请日：2022-03-04
发明人： Shinichi YAMAGUCHI
摘要： This surface-treated steel includes surface-treated steel comprising:
a steel sheet;
a plated layer including zinc formed on the steel sheet; and
a film formed on the plated layer,
wherein the film has a thickness of 100 nm or more and 1000 nm or less,
wherein the film includes:
an amorphous phase A containing Si, C, O, P, Zn, and V, and one or two or more kinds selected from the group consisting of Ti, Zr, and Al as constituent elements, wherein Zn/Si, which is a peak intensity ratio between Zn and Si, is 1.0 or more, and V/P, which is a mass ratio between V and P, is 0.050 to 1.000 when analysis is performed by EDS; and
an amorphous phase B containing Si, O, and Zn, wherein the amorphous phase B has a Zn/Si ratio of less than 1.0, the Zn/Si ratio is a peak intensity ratio between Zn and Si when analysis is performed by EDS,
a Zn content of the amorphous phase A is 10 mass % or less, and
in a cross section in a thickness direction, a percentage of a length of an interface between the plated layer and the amorphous phase B to a length of an interface between the plated layer and the film is 30% or more.-
公开(公告)号：US20230138051A1
公开(公告)日：2023-05-04
申请号：US17910289
申请日：2021-03-24
发明人： Shinichi YAMAGUCHI , Soshi FUJITA
摘要： Provided is an Al-plated hot stamped steel material comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, and a chemical conversion coating formed on the Al-plating layer and containing zinc phosphate-based crystals and Ce-based compounds deposited on the surfaces of the zinc phosphate-based crystals, wherein an amount of deposition of the zinc phosphate-based crystals in the chemical conversion coating is, converted to metal Zn, 0.3 to 4.0 g/m2 and an area ratio of the Ce-based compounds in the chemical conversion coating is 0.5 to 25%.
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公开(公告)号：US20230116894A1
公开(公告)日：2023-04-13
申请号：US17914389
申请日：2020-05-18
发明人： Michiko KONNO , Jun MAKI , Shinichi YAMAGUCHI , Soshi FUJITA
IPC分类号： C21D8/02 , C22C38/54 , C22C38/44 , C22C38/42 , C22C38/50 , C22C38/06 , C22C38/04 , C23C28/00 , C21D9/46
摘要： Provided is a hot stamped body comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, a coating formed on the Al-plating layer and containing ZnO particles and CeO2 particles having an average particle size smaller than an average particle size of the ZnO particles, and a Zn- and Al-containing complex oxide layer formed between the Al-plating layer and the coating. Further, provided is a method for producing a hot stamped body comprising forming an Al-plating layer on at least one side of a steel sheet, coating a surface of the Al-plating layer with an aqueous solution containing ZnO particles and CeO2 particles, then heating it to form a coating containing ZnO particles and CeO2 particles on the Al-plating layer, and hot pressing the steel sheet. Further, provided is an Al-plated steel sheet comprising a steel base material, an Al-plating layer formed on at least one surface of the steel base material, and a coating formed on the Al-plating layer and containing ZnO particles and CeO2 particles having an average particle size smaller than an average particle size of the ZnO particles.
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公开(公告)号：US20200232077A1
公开(公告)日：2020-07-23
申请号：US16487797
申请日：2018-03-23
发明人： Shinichi YAMAGUCHI , Jun MAKI , Soshi FUJITA , Shintaro YAMANAKA , Michiko KONNO , Tetsuya TOBA
摘要： A sheet includes: a base; an Al-plating layer on at least one of opposite surfaces of the base; an intermediate coating layer on a surface of the Al-plating layer; and a surface coating layer formed on a surface of the intermediate coating layer and containing ZnO particles with a mean particle size of 0.10 μm or more and 5.00 μm or less and an organic resin such that an amount of coating of the ZnO particles is 0.5 g/m2 or more and 10.0 g/m2 or less in terms of metallic zinc.
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公开(公告)号：US20230235437A1
公开(公告)日：2023-07-27
申请号：US18007650
申请日：2021-03-19
CPC分类号： C23C2/06 , C22C18/04 , B32B15/013 , C23C2/40 , C23C2/29
摘要： This hot-dip Zn—Al—Mg-based plated steel includes: a steel; and a plating layer formed on a surface of the steel, in which the plating layer contains, as an average composition, Mg: 1 to 10 mass %, Al: 4 to 22 mass %, and a remainder consisting of Zn and impurities, the plating layer includes an (Al—Zn mixed structure) in an area ratio of 10% to 70% in a cross section of the plating layer in a matrix of an (Al/Zn/MgZn2 ternary eutectic structure), the (Al—Zn mixed structure) includes a first region that has a Zn concentration in a range of 75 mass % or more and less than 85 mass % and a second region that is present inside the first region and has a Zn concentration in a range of 67 mass % or more and less than 75 mass %, and an area ratio of the second region in the (Al—Zn mixed structure) in the cross section of the plating layer is more than 0% and 40% or less.
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公开(公告)号：US20200002818A1
公开(公告)日：2020-01-02
申请号：US16485703
申请日：2018-03-23
摘要： An Al-plated steel sheet includes: a base; an Al-plating layer formed on at least one of opposite surfaces of the base; and a surface layer formed on the Al-plating layer, the surface layer containing: ZnO particles; an organic resin; and acetylacetonato in an amount in a range from 10 mass % to 30 mass %, both inclusive, with respect to a total mass of the surface layer. A mean particle size of the ZnO particles is in a range from 0.10 μm to 5.00 μm, both inclusive, and an amount of coating of the ZnO particles is in a range from 0.5 g/m2 to 10.0 g/m2, both inclusive, in terms of metal Zn.
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