公开(公告)号：US09758853B2

公开(公告)日：2017-09-12

申请号：US14763913

申请日：2014-02-17

Applicant: JFE STEEL CORPORATION

Inventor： Masahiro Yoshida ,  Akira Matsuzaki ,  Satoru Ando

IPC: C23C2/12 ,  C23C2/28 ,  C23C2/06 ,  C23C2/40 ,  C22C18/04 ,  C22C21/00 ,  B32B15/01 ,  C23C2/04 ,  C23C2/00 ,  C23C2/26 ,  C23C30/00 ,  C22C21/10

CPC classification number: C23C2/12 ,  B32B15/012 ,  B32B15/013 ,  C22C18/04 ,  C22C21/00 ,  C22C21/10 ,  C23C2/00 ,  C23C2/04 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C2/285 ,  C23C2/40 ,  C23C2/405 ,  C23C30/00 ,  C23C30/005 ,  Y10T428/12757 ,  Y10T428/12799 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/12993

Abstract: Disclosed is a hot-dip Al—Zn alloy coated steel sheet having excellent anti-corrosion property after coating, and a method for producing the same. In the disclosure, the hot-dip Al—Zn alloy coated steel sheet has a hot-dip coating layer containing by mass %, Al: 25% to 90%, and at least one of Sn: 0.01% to 2.0%, In: 0.01% to 10%, and Bi: 0.01% to 2.0%.

公开(公告)号：US11795526B2

公开(公告)日：2023-10-24

申请号：US17312626

申请日：2019-11-13

Applicant: JFE Steel Corporation

Inventor： Masahiro Yoshida ,  Takeshi Matsuda ,  Kazuhisa Okai ,  Yusuke Fushiwaki ,  Akira Matsuzaki ,  Daisuke Mizuno

IPC: C22C18/04 ,  C23C22/23

CPC classification number: C22C18/04 ,  C23C22/23

Abstract: A surface-treated steel sheet includes a chemical conversion coating with a thickness of 3.0 μm or less, the chemical conversion coating being placed on a surface of a hot-dip Zn—Al alloy coated steel sheet including a hot-dip Zn—Al alloy coating film containing Al: more than 1.0 mass % and 15 mass % or less, a balance being Zn and inevitable impurities. The chemical conversion coating contains AlH2P3O10.2H2O and a compound containing one or more elements selected from Mg, Ca, and Sr such that a sum of contents of AlH2P3O10.2H2O and the compound is 3.0 mass % to 50 mass %.

公开(公告)号：US20220112579A1

公开(公告)日：2022-04-14

申请号：US17312626

申请日：2019-11-13

Applicant: JFE Steel Corporation

Inventor： Masahiro Yoshida ,  Takeshi Matsuda ,  Kazuhisa Okai ,  Yusuke Fushiwaki ,  Akira Matsuzaki ,  Daisuke Mizuno

IPC: C22C18/04 ,  C23C22/23

Abstract: A surface-treated steel sheet includes a chemical conversion coating with a thickness of 3.0 μm or less, the chemical conversion coating being placed on a surface of a hot-dip Zn—Al alloy coated steel sheet including a hot-dip Zn—Al alloy coating film containing Al: more than 1.0 mass % and 15 mass % or less, a balance being Zn and inevitable impurities. The chemical conversion coating contains AlH2P3O10.2H2O and a compound containing one or more elements selected from Mg, Ca, and Sr such that a sum of contents of AlH2P3O10.2H2O and the compound is 3.0 mass % to 50 mass %.

公开(公告)号：US10662516B2

公开(公告)日：2020-05-26

申请号：US15553658

申请日：2016-03-02

Applicant: JFE STEEL CORPORATION

Inventor： Toshihiko Ooi ,  Yohei Sato ,  Yoichi Tobiyama ,  Toshiyuki Okuma ,  Akihiko Furuta ,  Masahiro Yoshida ,  Yoshitsugu Suzuki ,  Satoru Ando ,  Akira Matsuzaki

IPC: C23C2/06 ,  C22C18/04 ,  C23C2/28 ,  C22C30/06 ,  C23C2/12 ,  C22C21/10

Abstract: Provided is a hot-dip Al—Zn—Mg—Si coated steel sheet having good corrosion resistance in flat parts and edge parts, and also having excellent worked part corrosion resistance. The hot-dip Al—Zn—Mg—Si coated steel sheet includes a base steel sheet and a hot-dip coating on a surface of the base steel sheet. The hot-dip coating includes an interfacial alloy layer present at an interface with the base steel sheet and a main layer present on the interfacial alloy layer, and contains from 25 mass % to 80 mass % of Al, from greater than 0.6 mass % to 15 mass % of Si, and from greater than 0.1 mass % to 25 mass % of Mg. The Mg content and Si content in the hot-dip coating satisfy formula (1): MMg/(MSi−0.6)>1.7  (1) where MMg represents the Mg content (mass %) and MSi represents the Si content (mass %).

公开(公告)号：US09493868B2

公开(公告)日：2016-11-15

申请号：US14364357

申请日：2012-12-10

Applicant: JFE Steel Corporation ,  Tokyo Institute of Technology

Inventor： Tooru Tsuru ,  Toshio Maruyama ,  Tatsuo Sato ,  Masao Takeyama ,  Masahiro Yoshida ,  Sakae Fujita ,  Sachiko Suzuki ,  Satoru Ando ,  Hiroki Nakamaru

IPC: B32B15/01 ,  C22C21/00 ,  C23C2/12 ,  C22C21/06 ,  C23C2/28 ,  C21D8/04 ,  C21D1/673

CPC classification number: C23C2/12 ,  C21D1/673 ,  C21D8/0473 ,  C21D8/0478 ,  C21D2211/004 ,  C22C21/06 ,  C23C2/28 ,  Y10T428/12757

Abstract: An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, wherein the coating layer has pseudoternary eutectic microstructures of αAl—Mg2Si—(Al—Fe—Si—Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.

Abstract translation: 铝或铝合金涂层钢材包括基体钢; 以及以质量％的Mg：6〜10％，Si：3〜7％，Fe：0.2〜2％，Mn：0.02〜2％的比例含有的涂层， 作为Al和偶然杂质的平衡，其中涂层具有αAl-Mg2Si（（Al-Fe-Si-Mn））的假三元共晶微结构，并且涂层中的假三元共晶微结构的面积比至少为30％。

公开(公告)号：US20160047018A1

公开(公告)日：2016-02-18

申请号：US14779748

申请日：2014-03-19

Applicant: JFE STEEL CORPORATION

Inventor： Minako Morimoto ,  Masahiro Yoshida ,  Satoru Ando

IPC: C22C21/10 ,  B32B15/01

CPC classification number: C22C21/10 ,  B32B15/012 ,  C23C2/02 ,  C23C2/12 ,  C23C2/26 ,  C23C2/405 ,  C23C28/021

Abstract: An Al—Zn-coated steel sheet that suppresses blistering and offers good corrosion resistance after painting is provided. The Al—Zn-coated steel sheet includes an Al—Zn coating layer on a steel sheet surface, the Al—Zn coating layer including two layers which are an interfacial alloy layer present in an interface with a base steel sheet and an upper layer disposed on the interfacial alloy layer. The upper layer contains compounds of Si and Ca or Si, Ca, and Al, and Ca/Si mass % ratio in the upper layer is 0.72 to 1.4. The interfacial alloy layer contains an Fe—Al compound and/or an Fe—Al—Si compound. In the upper layer, Si content is 0.1 to 2.0 mass % and Ca content is 0.001 to 2.0 mass %.

Abstract translation: 提供一种抑制起泡并提供涂漆后耐腐蚀性的Al-Zn涂层钢板。 所述Al-Zn系镀覆钢板在钢板表面上具有Al-Zn被覆层，所述Al-Zn被覆层包含与基材钢板的界面上存在的界面合金层和设置在上层的界面合金层 在界面合金层上。 上层含有Si和Ca或Si，Ca和Al的化合物，上层的Ca / Si质量％比为0.72〜1.4。 界面合金层含有Fe-Al化合物和/或Fe-Al-Si化合物。 在上层中，Si含量为0.1〜2.0质量％，Ca含量为0.001〜2.0质量％。

公开(公告)号：US20140377583A1

公开(公告)日：2014-12-25

申请号：US14364357

申请日：2012-12-10

Applicant: JFE Steel Corporation ,  Tokyo Institute of Technology

Inventor： Tooru Tsuru ,  Toshio Maruyama ,  Tatsuo Sato ,  Masao Takeyama ,  Masahiro Yoshida ,  Sakae Fujita ,  Sachiko Suzuki ,  Satoru Ando ,  Hiroki Nakamaru

IPC: C23C2/12

CPC classification number: C23C2/12 ,  C21D1/673 ,  C21D8/0473 ,  C21D8/0478 ,  C21D2211/004 ,  C22C21/06 ,  C23C2/28 ,  Y10T428/12757

Abstract: An aluminum or aluminum alloy-coated steel material includes base steel; and a coating layer formed on a surface of the base steel and containing by mass % Mg: 6% to 10%, Si: 3% to 7%, Fe: 0.2% to 2%, Mn: 0.02% to 2%, and the balance as Al and incidental impurities, where-in the coating layer has pseudoternary eutectic microstructures of αAl—Mg2Si—(Al—Fe—Si—Mn) and an area ratio of the pseudoternary eutectic microstructures in the coating layer is at least 30%.

Abstract translation: 铝或铝合金涂层钢材包括基体钢; 以及以质量％Mg：6〜10％，Si：3〜7％，Fe：0.2〜2％，Mn：0.02〜2％的比例含有的涂层， 作为Al和偶然杂质的平衡，其中在涂层中具有αAl-Mg 2 Si-（Al-Fe-Si-Mn）的假三元共晶微结构和涂层中的假三元共晶微结构的面积比至少为30％ 。