公开(公告)号：US20240158901A1

公开(公告)日：2024-05-16

申请号：US18280909

申请日：2022-03-23

Applicant: NIPPON STEEL CORPORATION

Inventor： Takashi FUJII ,  Hiroyasu FURUKAWA ,  Yuki YAMAMURA ,  Fumio SHIBAO ,  Kohei UEDA ,  Akira NAKAGAWA ,  Naoto SASAKI

IPC: C23C2/06 ,  C09D5/00 ,  C09D167/00 ,  C23C2/40

CPC classification number: C23C2/06 ,  C09D5/002 ,  C09D167/00 ,  C23C2/40

Abstract: To more securely inhibit the occurrence of paint film floating even when drawing is performed by using a Zn—Al—Mg-based alloy plated steel sheet as a base sheet.
A pre-coated plated steel sheet according to the present invention includes: a plating layer composed of Zn—Al—Mg-based alloy plating, the plating layer being positioned on one side or both sides of a steel sheet; a chemical treatment film layer positioned on the plating layer; and a paint film layer positioned on the chemical treatment film, in which the paint film layer includes a primer paint film layer, and an upper paint film layer positioned on the primer paint film layer, and at least any of the following is satisfied: both a condition (a-1) and a condition (a-2); a condition (b); and a condition (c).

公开(公告)号：US20240133041A1

公开(公告)日：2024-04-25

申请号：US18547879

申请日：2021-03-08

Applicant: NIPPON STEEL CORPORATION

Inventor： Takashi FUJII ,  Kohei UEDA

IPC: C23C28/00 ,  C22C18/04 ,  C22C21/10 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C22/73 ,  C23C22/82

CPC classification number: C23C28/321 ,  C22C18/04 ,  C22C21/10 ,  C23C2/06 ,  C23C2/12 ,  C23C2/26 ,  C23C22/73 ,  C23C22/82 ,  C23C28/34 ,  C23C28/345

Abstract: A coated and plated steel sheet or coated and plated steel strip including: a steel sheet or a steel strip; a plating layer provided on one surface or both surfaces of the steel sheet or steel strip and containing zinc; a chemical conversion coating provided on the plating layer provided on one surface of the steel sheet or steel strip or provided on at least one of the plating layers provided on both surfaces of the steel sheet or steel strip; and a single-layer or multilayer coating film provided on the chemical conversion coating, in which the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating, contains a cerium compound capable of being dissolved in an amount of 0.10 g or more with respect to 100 g of water at room temperature at a concentration of from 0.01 to 10.0% by mass, with respect to a solid content of the single-layer coating film in contact with the chemical conversion coating or the coating film, of the multilayer coating film, which is in contact with the chemical conversion coating.

公开(公告)号：US20210095356A1

公开(公告)日：2021-04-01

申请号：US16981653

申请日：2018-03-30

Applicant: NIPPON STEEL CORPORATION

Inventor： Takafumi YOKOYAMA ,  Kohichi SANO ,  Riki OKAMOTO ,  Hiroyuki KAWATA ,  Eisaku SAKURADA ,  Yuji YAMAGUCHI ,  Kazuki SHIOKAWA ,  Yuichi NAKAHIRA ,  Kohei UEDA ,  Masahiro NAKATA ,  Satoshi UCHIDA

IPC: C21D9/46 ,  B32B15/01 ,  C22C38/18 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D8/02 ,  C21D6/00 ,  C23C2/40 ,  C23C2/28

Abstract: A steel sheet according to an aspect of the present invention has a predetermined chemical composition, in which a steel structure of an inside of the steel sheet contains, by volume fraction, soft ferrite: 0% to 30%, retained austenite: 3% to 40%, fresh martensite: 0% to 30%, a sum of pearlite and cementite: 0% to 10%, and a remainder including hard ferrite, in the inside of the steel sheet, a number proportion of the retained austenite having an aspect ratio of 2.0 or more in the total retained austenite is 50% or more, a soft layer having a thickness of 1 μm to 100 μm from the surface is present in a sheet thickness direction, among ferrite contained in the soft layer, a volume fraction of grains having an aspect ratio of less than 3.0 is 50% or more, a volume fraction of retained austenite in the soft layer is 50% or more of the volume fraction of the retained austenite of the inside of the steel sheet, and a peak of an emission intensity at a wavelength indicating Si appears in a range of more than 0.2 μm from the surface to 5 μm or less from the surface.

公开(公告)号：US20240425724A1

公开(公告)日：2024-12-26

申请号：US18824607

申请日：2024-09-04

Applicant: NIPPON STEEL CORPORATION

Inventor： Masumi KOORI ,  Kohei UEDA ,  Atsushi MORISHITA ,  Atsuo KOGA

IPC: C09J5/10 ,  B32B15/09 ,  B32B15/092 ,  B32B15/095 ,  B32B15/18

Abstract: This adhesively joined structure includes a first member having a metal portion and a film portion disposed on at least a part of a surface of the metal portion; a second member; an adhesive layer for joining the first member and the second member to each other via the film portion. The film portion includes an organic resin phase containing one or more of a urethane group, an epoxy group, and an ester group; an organic compound phase formed of an organic silicon compound; and optionally an inorganic compound phase formed of an inorganic silicon compound. The total volume percentage of the organic compound phase and the inorganic compound phase to the total volume of the film portion is 16 vol % to 84 vol %. The volume percentage of the organic compound phase to the total volume of the film portion is 16 vol % to 84 vol %. The volume percentage of the inorganic compound phase to the total volume of the film portion is limited to 10 vol % or less. The organic silicon compound includes a Si—C bond; and a Si—O bond or a Si—OH bond or a a combination thereof.

公开(公告)号：US20240120595A1

公开(公告)日：2024-04-11

申请号：US18276317

申请日：2022-02-07

Applicant: NIPPON STEEL CORPORATION

Inventor： Kyohei MIYAKE ,  Atsuo KOGA ,  Kohei UEDA ,  Yutaka MIKAZUKI ,  Katsunari NORITA ,  Sho MATSUI ,  Takashi OKE

IPC: H01M50/24 ,  H01M10/613 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231

CPC classification number: H01M50/24 ,  H01M10/613 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231

Abstract: This battery unit is a battery unit including a battery pack that houses a battery cell, and a water-cooling medium flow path formed outside a bottom surface of the battery pack, in which the water-cooling medium flow path is made of a Zn-based plated steel sheet, an inorganic film or a resin film is formed as a chemical conversion coating film on a surface of the Zn-based plated steel sheet, and the inorganic film contains a Si-based component or a Zr-based component as a main component.

公开(公告)号：US20230399750A1

公开(公告)日：2023-12-14

申请号：US18036316

申请日：2021-11-11

Applicant: NIPPON STEEL CORPORATION

Inventor： Hiromasa SHOJI ,  Kohei UEDA ,  Satoru YONETANI ,  Tomokazu SUGITANI ,  Nobuki SHIRAGAKI

IPC: C23C22/36 ,  C23C30/00

CPC classification number: C23C22/361 ,  C23C30/00

Abstract: A surface-treated metal sheet includes a steel sheet, a coating layer containing zinc formed on the steel sheet and a conversion coating formed on the coating layer, wherein the conversion coating contains an organosilicon compound, a phosphate compound and a fluorine compound, and when the surface roughness in a rectangular area with a side of 1 μm on the surface of the conversion coating is represented by an arithmetic mean height of the scale limited surface Sa, a maximum height of the scale limited surface Sz, and a root mean square height of the scale limited surface Sq, one or more conditions of an arithmetic mean height of the scale limited surface Sa being 0.1 to 10 nm, a maximum height of the scale limited surface Sz being 1 to 1,000 nm, and a root mean square height of the scale limited surface Sq being 0.1 to 100 nm are satisfied.

公开(公告)号：US20220161521A1

公开(公告)日：2022-05-26

申请号：US17599914

申请日：2019-04-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Kohei UEDA ,  Yasuaki KAWAMURA ,  Masumi KOORI ,  Masaharu IBARAGI

IPC: B32B15/14 ,  B32B15/08 ,  C08J5/12 ,  C08J5/24

Abstract: What is provided is a new and improved metal-carbon fiber reinforced resin material composite in which the galvanic corrosion of dissimilar materials of a metal member is suppressed and electrodeposition coatability is excellent and a method for manufacturing the metal-carbon fiber reinforced resin material composite. A metal-carbon fiber reinforced resin material composite according to the present invention has a metal member, a resin coating layer disposed on at least a part of a surface of the metal member, and a carbon fiber reinforced resin material containing a matrix resin and a carbon fiber material present in the matrix resin, the resin coating layer contains any one or more kinds selected from the group consisting of metal particles, intermetallic compound particles, conductive oxide particles, and conductive non-oxide ceramic particles as conductive particles and further contains a binder resin, and the conductive particles have a powder resistivity at 23° C. to 27° C. of 7.0×107 Ω·cm or less and contain one or more selected from the group consisting of Zn, Si, Zr, V, Cr, Mo, Mn, and W.

公开(公告)号：US20210340407A1

公开(公告)日：2021-11-04

申请号：US17279933

申请日：2019-09-27

Applicant: NIPPON STEEL CORPORATION

Inventor： Masumi KOORI ,  Kohei UEDA ,  Atsushi MORISHITA ,  Atsuo KOGA

IPC: C09J5/10 ,  B32B15/18 ,  B32B15/092 ,  B32B15/09 ,  B32B15/095

Abstract: This adhesively joined structure includes a first member having a metal portion and a film portion disposed on at least a part of a surface of the metal portion; a second member; an adhesive layer for joining the first member and the second member to each other via the film portion. The film portion includes an organic resin phase containing one or more of a urethane group, an epoxy group, and an ester group; an organic compound phase formed of an organic silicon compound; and optionally an inorganic compound phase formed of an inorganic silicon compound. The total volume percentage of the organic compound phase and the inorganic compound phase to the total volume of the film portion is 16 vol % to 84 vol %. The volume percentage of the organic compound phase to the total volume of the film portion is 16 vol % to 84 vol %. The volume percentage of the inorganic compound phase to the total volume of the film portion is limited to 10 vol % or less. The organic silicon compound includes a Si—C bond; and a Si—O bond or a Si—OH bond or a a combination thereof.

公开(公告)号：US20210024705A1

公开(公告)日：2021-01-28

申请号：US17043315

申请日：2019-04-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Masumi KOORI ,  Yasuaki KAWAMURA ,  Kohei UEDA

IPC: C08J5/04 ,  B32B15/08 ,  C08J5/24 ,  B32B37/10 ,  B32B15/18 ,  B32B27/18

Abstract: A metal-carbon fiber reinforced plastic composite comprising a metal member of a ferrous material or ferrous alloy, a resin layer provided on at least one surface of the metal member and including a thermoplastic resin, and carbon fiber reinforced plastic provided on a surface of the resin layer and including a carbon fiber material and a matrix resin having thermoplasticity, a glass transition point Tg1 or melting point Tm1 of the resin layer being higher than a glass transition point Tg2 or melting point Tm2 of the carbon fiber reinforced plastic, in which metal-carbon fiber reinforced plastic composite, an AC impedance at a frequency 1 Hz when immersing the metal-carbon fiber reinforced plastic composite in an aqueous solution containing sodium chloride in 5 mass % is 1×107Ω or more.

公开(公告)号：US20220145026A1

公开(公告)日：2022-05-12

申请号：US17599985

申请日：2019-04-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Yasuaki KAWAMURA ,  Kohei UEDA ,  Masumi KOORI

IPC: C08J5/24 ,  B05D1/06 ,  B32B15/14 ,  B32B5/02 ,  C25D13/04 ,  C23C2/06 ,  C23C2/40 ,  C23C2/20 ,  C22C18/04 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C09D5/00 ,  C09D5/44 ,  C09D163/00

Abstract: This metal-carbon fiber reinforced resin material composite includes a metal member, a coating layer that is disposed on at least a part of a surface of the metal member and contains a resin, a carbon fiber reinforced resin material layer that is disposed on at least a part of a surface of the coating layer and contains a matrix resin and a carbon fiber material that is present in the matrix resin, and an electrodeposition film disposed so as to cover at least all of surfaces of the carbon fiber reinforced resin material layer, an interface between the metal member and the coating layer, and an interface between the coating layer and the carbon fiber reinforced resin material layer, in which an average film thickness A of the electrodeposition film formed on the surface of the carbon fiber reinforced resin material layer is 0.3 to 1.4 μm, and, at the time of immersing the metal-carbon fiber reinforced resin material composite in a 5 mass % sodium chloride aqueous solution with the electrodeposition film removed, an alternating impedance at a frequency of 1 Hz is 1×107Ω to 1×109Ω.