公开(公告)号：US20210387679A1

公开(公告)日：2021-12-16

申请号：US17279502

申请日：2019-09-27

Applicant: NIPPON STEEL CORPORATION

Inventor： Atsuo KOGA ,  Masumi KOORI ,  Kohei UEDA

IPC: B62D29/00 ,  B62D27/02 ,  B32B7/12 ,  B32B15/08 ,  B32B15/18

Abstract: This bonded 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 contains a resin and inorganic particles. The inorganic particles are formed of ferrosilicon or non-oxide ceramics containing V. Some of the inorganic particles protrude toward the adhesive layer. The particle size of at least some of the inorganic particles protruding toward the adhesive layer is less than the film thickness of the film portion.

公开(公告)号：US20210154978A1

公开(公告)日：2021-05-27

申请号：US17044256

申请日：2019-04-02

Applicant: NIPPON STEEL CORPORATION

Inventor： Masumi KOORI ,  Yasuaki KAWAMURA ,  Kohei UEDA

IPC: B32B15/092 ,  B29C43/20 ,  B29C43/34 ,  B29C65/02 ,  B29C70/16 ,  B29C70/30 ,  B29C70/68 ,  B32B5/02

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 thermosetting 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, an indentation elastic modulus at 160 to 180° C. of the resin layer being higher than an indentation elastic modulus at 160 to 180° C. of the matrix resin.

公开(公告)号：US20210123122A1

公开(公告)日：2021-04-29

申请号：US17041372

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: C22C38/58 ,  C22C38/54 ,  C22C38/52 ,  C22C38/50 ,  C22C38/48 ,  C22C38/46 ,  C22C38/44 ,  C22C38/42 ,  C22C38/02 ,  C22C38/00 ,  C22C38/06 ,  C21D9/46 ,  C23C2/06 ,  C23C2/40 ,  C21D8/02 ,  C21D9/00

Abstract: This steel sheet 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 includes 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 to 100 μm from a surface in a sheet thickness direction is present, in ferrite contained in the soft layer, a volume fraction of grains having an aspect ratio of less than 3.0 is 50% or more, the volume fraction of retained austenite in the soft layer is less than 50% 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 and 5.0 μm or less from the surface.

公开(公告)号：US20250015379A1

公开(公告)日：2025-01-09

申请号：US18709954

申请日：2022-11-17

Applicant: NIPPON STEEL CORPORATION

Inventor： Kyohei MIYAKE ,  Daichi UEDA ,  Kohei UEDA ,  Tatsuya SAKIYAMA ,  Shohei YAMAZAKI

IPC: H01M10/613 ,  H01M10/6568

Abstract: A cooling floor member (100A) cools a battery cell and includes a metal floor base material (101), a flat sheet-like metal floor sheet (102), and a partition member (105) that is a thermoplastic resin composition (106), and a region surrounded by the metal floor base material (101), the flat sheet-like metal floor sheet (102), and the partition member (105) is a cooling liquid channel (104) through which a cooling liquid flows. The metal floor base material (101) or the flat sheet-like metal floor sheet (102) or a combination thereof has a polypropylene layer (160) or a polycarbonate unit-containing polyurethane layer (161). The metal floor base material (101) or the flat sheet-like metal floor sheet (102) or a combination thereof is joined to the partition member (105) via a compatible layer (140) between the polypropylene layer (160) or the polycarbonate unit-containing polyurethane layer (161) and the thermoplastic resin composition (106).

公开(公告)号：US20240229245A9

公开(公告)日：2024-07-11

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：US20240154208A1

公开(公告)日：2024-05-09

申请号：US18274995

申请日：2022-02-04

Applicant: NIPPON STEEL CORPORATION

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

IPC: H01M10/6556 ,  B32B15/01 ,  C21D8/02 ,  C21D9/46 ,  C22C21/02 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C23C2/12 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/231 ,  H01M50/24

CPC classification number: H01M10/6556 ,  B32B15/012 ,  C22C21/02 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  H01M10/613 ,  H01M10/6554 ,  H01M10/6568 ,  H01M50/224 ,  H01M50/231 ,  H01M50/24 ,  C21D8/0226 ,  C21D8/0236 ,  C21D9/46 ,  C23C2/12 ,  C23C2/20 ,  C23C2/28 ,  C23C2/40 ,  H01M2220/20

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 of the battery pack is made of an Al-based plated steel sheet.

公开(公告)号：US20240150585A1

公开(公告)日：2024-05-09

申请号：US18281933

申请日：2022-03-23

Applicant: NIPPON STEEL CORPORATION

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

IPC: C09D5/08 ,  B05D7/16 ,  C09D5/00 ,  C09D175/06

CPC classification number: C09D5/08 ,  B05D7/16 ,  C09D5/002 ,  C09D175/06 ,  C23C2/06

Abstract: To further improve, even under OT bending with the use of a Zn—Al—Mg-based alloy plated steel sheet as a base sheet, corrosion resistance regarding corrosion under paint film at a OT bent portion and a periphery thereof, without causing occurrence of cracks and peeling in the paint film.
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：US20220177657A1

公开(公告)日：2022-06-09

申请号：US17601230

申请日：2020-04-16

Applicant: NIPPON STEEL CORPORATION

Inventor： Masumi KOORI ,  Kohei UEDA ,  Atsuo KOGA ,  Masaharu IBARAGI ,  Noriyuki NEGI ,  Masafumi USUI

IPC: C08J5/04 ,  C25D1/00 ,  B32B15/14 ,  B32B15/18 ,  B32B15/20

Abstract: The invention has as its object the provision of a metal-fiber reinforced plastic composite able to more reliably prevent occurrence of an electrolytic corrosion action when forming a composite of a metal member and a fiber reinforced plastic layer comprising reinforcing fiber (carbon fiber) and a matrix resin.
A metal-fiber reinforced plastic composite 1 according to the present invention comprises a metal member 10, an insulating layer 30 arranged on at least part of a surface of the metal member 10 and comprising a first matrix resin 31 containing nonconductive fiber 32, and a CFRP layer 40 arranged on at least part of a surface of the insulating layer 30 and comprising a second matrix resin 41 containing carbon fiber 42, wherein, when viewing the surface of the metal member 10 from vertically above, the CFRP layer 40 is positioned at the inside of a region where the insulating layer 30 is present and an outer edge of the CFRP layer 40 and an outer edge of the insulating layer 30 are 0.2 mm or more apart. Due to this, it is possible to prevent electrolytic corrosion of the metal member.

公开(公告)号：US20210114350A1

公开(公告)日：2021-04-22

申请号：US16972286

申请日：2019-06-14

Applicant: NIPPON STEEL CORPORATION

Inventor： Yasuaki KAWAMURA ,  Kohei UEDA ,  Masumi KOORI

IPC: B32B15/14 ,  C08K7/06 ,  C09D167/00 ,  C09D175/04 ,  B32B15/18 ,  B32B5/02

Abstract: To provide a metal-carbon fiber reinforced plastic material (CFRP) composite that has excellent adhesion and adhesion durability at a member interface and a method of producing a metal-CFRP composite.
The metal-CFRP composite according to the present invention includes: a metal member; a CFRP layer; and one or two layers of coating layers provided between the metal member and the CFRP layer. In the case where the coating layer consists of one layer, the coating layer is a coating layer containing an isocyanate group, and the matrix resin contains a phenoxy resin as a main component thereof, contains an epoxy group, and has bonds represented in (a structural formula 1) in the vicinity of an interface between the CFRP layer and the coating layer. In the case where the coating layer consists of two layers, the first coating layer that is located on the metal member side is a coating layer containing an isocyanate group, and the second coating layer that is located on the CFRP layer side is a coating layer that contains an epoxy resin as a main component thereof, and has bonds represented in (a structural formula 1) in the vicinity of an interface between the first coating layer and the second coating layer.

公开(公告)号：US20210017620A1

公开(公告)日：2021-01-21

申请号：US16982003

申请日：2018-03-30

Applicant: NIPPON STEEL CORPORATION

Inventor： Takafumi YOKOYAMA ,  Riki OKAMOTO ,  Kohichi SANO ,  Hiroyuki KAWATA ,  Kohei UEDA ,  Eisaku SAKURADA

IPC: C21D9/46 ,  C21D8/02 ,  C21D6/00 ,  C23C2/06 ,  C23C2/40 ,  C22C38/18 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/10 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/60 ,  C22C38/00 ,  B32B15/01

Abstract: This steel sheet 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 includes hard ferrite, 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 to 100 μm from a surface in a sheet thickness direction is present, in ferrite contained in the soft layer, a volume fraction of grains having an aspect ratio of 3.0 or more is 50% or more, a volume fraction of retained austenite in the soft layer is 80% or less of the volume fraction of the retained austenite in 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 and 10.0 μm or less from the surface.