公开(公告)号：US20230235437A1

公开(公告)日：2023-07-27

申请号：US18007650

申请日：2021-03-19

申请人： NIPPON STEEL CORPORATION

发明人： Tetsuya TOBA ,  Atsushi MORISHITA ,  Yusuke KOHIGASHI ,  Shinichi YAMAGUCHI ,  Takuya MITSUNOBU

IPC分类号： C23C2/06 ,  C22C18/04 ,  B32B15/01 ,  C23C2/40 ,  C23C2/28

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.

公开(公告)号：US20200232077A1

公开(公告)日：2020-07-23

申请号：US16487797

申请日：2018-03-23

申请人： NIPPON STEEL CORPORATION

发明人： Shinichi YAMAGUCHI ,  Jun MAKI ,  Soshi FUJITA ,  Shintaro YAMANAKA ,  Michiko KONNO ,  Tetsuya TOBA

IPC分类号： C22C38/50 ,  C22C38/44 ,  C22C38/42 ,  C22C38/04 ,  C23C2/12 ,  C23C2/26 ,  C23C28/00

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.

公开(公告)号：US20240043980A1

公开(公告)日：2024-02-08

申请号：US18271990

申请日：2021-11-30

申请人： NIPPON STEEL CORPORATION

发明人： Kohei TOKUDA ,  Mamoru SAITO ,  Takuya MITSUNOBU ,  Tetsuya TOBA ,  Yasuto GOTO ,  Atsushi MORISHITA ,  Yasuaki KAWAMURA ,  Fumiaki NAKAMURA ,  Koji KAWANISHI

IPC分类号： C23C2/06

CPC分类号： C23C2/06

摘要： A plated steel material having a plating layer having an average chemical composition containing, in mass %, Zn: more than 50.00%, Al: more than 15.0% and less than 30.0%, Mg: more than 5.0% and less than 15.0%, and Si: 0.25% or more and less than 3.50%, and impurities, and wherein a total amount (ΣA) of at least one selected from the group consisting of Sn, Bi and In is less than 1.00%, a total amount (ΣB) of at least one selected from the group consisting of Ca, Y, La, Ce and Sr is 0.02% or more and less than 0.60%, 2.0≤SMg/Si