公开(公告)号：US20230415453A1

公开(公告)日：2023-12-28

申请号：US18035988

申请日：2021-11-29

Applicant: NIPPON STEEL CORPORATION

Inventor： Kosuke KAWAMOTO ,  Yasuto GOTO

IPC: B32B15/01 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C21D1/74 ,  C23C18/32 ,  C25D3/12

CPC classification number: B32B15/015 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C22C38/004 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0247 ,  C21D8/0278 ,  C21D9/46 ,  C21D1/74 ,  C23C18/32 ,  C25D3/12

Abstract: The surface-treated steel sheet includes an alloy layer containing Ni and Co. In a case where, in a cross section obtained by cutting the alloy layer in the thickness direction, a range having a width of 2000 nm and extending from the surface of the alloy layer to a depth of 100 nm is partitioned into regions each having a width of 100 nm and a depth of 100 nm, within the range the alloy layer includes a plurality of high Co concentration regions in each of which the ratio of a Co concentration to a sum of the Co concentration and a Ni concentration within the partitioned region is 0.8 or more, and a plurality of alloyed regions in each of which a ratio of the Co concentration to a sum of the Co concentration and the Ni concentration within the partitioned region is less than 0.8.

公开(公告)号：US20230407509A1

公开(公告)日：2023-12-21

申请号：US18036877

申请日：2021-11-29

Applicant: NIPPON STEEL CORPORATION

Inventor： Kosuke KAWAMOTO ,  Yasuto GOTO ,  Yuta DAIROKUNO ,  Koki SHIMADA

IPC: C25D5/12 ,  C21D9/46 ,  C25D5/36 ,  C25D5/50 ,  C25D3/12

CPC classification number: C25D5/12 ,  C21D9/46 ,  C25D3/12 ,  C25D5/50 ,  C25D5/36

Abstract: A surface-treated steel sheet of the present disclosure includes a steel sheet, and an alloy layer containing Ni and Co on a surface of the steel sheet. A surface roughness Ra1 of the surface of the alloy layer over a sampling length of 5.0 mm in the width direction of the steel sheet is 2.0 μm or less. Ra2 that denotes the arithmetic mean height of a roughness curve of the surface of the alloy layer over a sampling length of 10 μm in the width direction of the steel sheet is 20 nm or less, and RSm that denotes the mean length of roughness curve elements over the sampling length of 10 μm in the width direction of the steel sheet is 700 nm or more, Ra2 and RSm being measured using an atomic force microscope.

公开(公告)号：US20230323521A1

公开(公告)日：2023-10-12

申请号：US18249382

申请日：2021-09-29

Applicant: NIPPON STEEL CORPORATION

Inventor： Mamoru SAITO ,  Yasuto GOTO

IPC: C23C2/06 ,  C22C18/04 ,  C23C2/28

CPC classification number: C23C2/06 ,  C22C18/04 ,  C23C2/29

Abstract: A coated steel product including a base steel, and a coating layer containing a Zn—Al—Mg alloy layer disposed on a surface of the base steel, in which the coating layer has a predetermined chemical composition, the coated steel product including dendrite-shaped MgZn2 phase having a surface roughness Sa of 50 nm or less on a surface of the Zn—Al—Mg alloy layer, an area ratio of the dendrite-shaped MgZn2 phase having a surface roughness Sa of 50 nm or less being from 30% to 80% within a region of an observable field of view of 5 mm2, and among the dendrite-shaped MgZn2 phase having a surface roughness Sa of 50 nm or less, a number of dendrite-shaped MgZn2 phase having an area of 0.1 mm2 or more being from 5 to 100 within a region of an observable field of view of 25 mm2.

公开(公告)号：US20230275292A1

公开(公告)日：2023-08-31

申请号：US18031326

申请日：2021-10-04

Applicant: NIPPON STEEL CORPORATION

Inventor： Akinobu KOBAYASHI ,  Takehiro TAKAHASHI ,  Yasuto GOTO

IPC: H01M50/119 ,  H01M50/124 ,  H01M50/159 ,  H01M50/169 ,  H01M50/133

CPC classification number: H01M50/119 ,  H01M50/124 ,  H01M50/133 ,  H01M50/159 ,  H01M50/169

Abstract: A novel battery container that can be obtained by welding plated steel sheets, has sufficient sealing ability over a long period of time, and is able to keep the base material of the plated steel sheets from being exposed and eluting into the electrolyte solution is provided. That is, a battery case comprised of a container body and a container lid, wherein the container body and the container lid are each comprised of a plated steel sheet, a joint part between the container and the container lid is comprised of a plating welded part containing a main constituent component of the plating of the plated steel sheet in 60 mass% or more and a steel sheet welded part containing the main constituent component of the plating in less than 60 mass%, and the plating welded part has a length of 0.5 µm or more and less than 1.0 mm in a joint longitudinal direction.

公开(公告)号：US20220403542A1

公开(公告)日：2022-12-22

申请号：US17777022

申请日：2019-12-20

Applicant: NIPPON STEEL CORPORATION

Inventor： Yasuto GOTO ,  Kiyokazu ISHIZUKA ,  Takehiro TAKAHASHI

IPC: C25D5/50 ,  C25D3/12

Abstract: A Ni-plated steel sheet includes a base steel sheet and a Ni-based coating layer that is disposed on a surface of the base steel sheet. The Ni-based coating layer includes a Fe—Ni alloy region that is formed on the surface of the base steel sheet. The Fe—Ni alloy region includes a mixed phase composed of a bcc phase and an fcc phase, and a component of the Fe—Ni alloy region includes 5 mass % or more of Fe and a remainder including 90 mass % or more of Ni.

公开(公告)号：US20220145473A1

公开(公告)日：2022-05-12

申请号：US17437746

申请日：2020-03-19

Applicant: NIPPON STEEL CORPORATION

Inventor： Hiromasa SHOJI ,  Kiyokazu ISHIZUKA ,  Kohei TOKUDA ,  Mamoru SAITO ,  Yasuto GOTO ,  Ikumi TOKUDA

IPC: C23C28/00 ,  C22C18/04 ,  C23C22/36

Abstract: A surface-treated metal material includes a metal sheet, a plating layer formed on the metal sheet and containing aluminum, magnesium, and zinc, and a composite coating formed on a surface of the plating layer, the composite coating including an organic silicon compound, one or two of a zirconium compound and a titanium compound, a phosphoric acid compound, a fluorine compound, and a vanadium compound, wherein, when a surface of the composite coating is analyzed at a spot size of φ30 μm using micro-fluorescent X-rays, a maximum value of V/Zn, which is a mass ratio of a V content to a Zn content, is 0.010 to 0.100.

公开(公告)号：US20220033988A1

公开(公告)日：2022-02-03

申请号：US17296395

申请日：2019-12-20

Applicant: NIPPON STEEL CORPORATION

Inventor： Yasuto GOTO ,  Kiyokazu ISHIZUKA ,  Takehiro TAKAHASHI

IPC: C25D5/50 ,  C25D5/14 ,  C21D9/46 ,  C22C19/03 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C25D3/12

Abstract: A Ni-plated steel sheet according to an aspect of the present invention includes: a base steel sheet; an Fe—Ni diffusion alloy region disposed on the base steel sheet; and a Ni plating region disposed on the Fe—Ni diffusion alloy region, in which an average equivalent circle diameter of crystal grains made of Ni (fcc) in the Ni plating region measured in a cross section perpendicular to a rolled surface of the base steel sheet is 0.2 to 4.0 μm.

公开(公告)号：US20210032765A1

公开(公告)日：2021-02-04

申请号：US17046674

申请日：2019-04-12

Applicant: NIPPON STEEL CORPORATION

Inventor： Takehiro TAKAHASHI ,  Kiyokazu ISHIZUKA ,  Yasuto GOTO

IPC: C25D5/50 ,  C21D9/46 ,  H01M2/02 ,  C22C38/00 ,  C25D3/12 ,  C22C38/04 ,  B32B15/01 ,  C22C38/06 ,  C22C38/02

Abstract: A Ni diffusion-plated steel sheet of the present invention includes a base steel sheet and a Fe—Ni diffusion alloy-plating layer positioned on at least one surface of the base steel sheet, an Ni coating weight of the Fe—Ni diffusion alloy-plating layer is 9.0 to 20 g/m2, a Fe concentration Cs of an outermost layer of the Fe—Ni diffusion alloy-plating layer is 10 to 55 mass %, the base steel sheet has a predetermined chemical composition, and a ferrite grain size number specified by JIS G 0551 (2013) of the base steel sheet is 11.0 or more.