公开(公告)号：US12116648B2

公开(公告)日：2024-10-15

申请号：US17042388

申请日：2019-03-20

Applicant: JFE Steel Corporation

Inventor： Hiroyuki Masuoka ,  Shinichi Furuya ,  Akira Matsuzaki ,  Hayato Takeyama

IPC: C21D9/46 ,  C21D6/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/04 ,  C22C38/06 ,  C23C28/04

CPC classification number: C21D9/46 ,  C21D6/005 ,  C21D6/008 ,  C21D8/0205 ,  C21D8/0236 ,  C21D8/0273 ,  C22C38/002 ,  C22C38/04 ,  C22C38/06 ,  C23C28/04

Abstract: An object is to provide a cold-rolled steel sheet having excellent phosphatability, even in the case where a phosphating solution has a low temperature, and a method for manufacturing the steel sheet, and a cold-rolled steel sheet for annealing.
A cold-rolled steel sheet for annealing has a chemical composition containing C: 0.01 mass % to 0.30 mass %, Si: less than 0.10 mass % (including 0.0 mass %), Mn: 2.0 mass % to 3.5 mass %, P: 0.05 mass % or less, S: 0.01 mass % or less, and Al: 0.15 mass % or less, the balance being Fe and inevitable impurities, in which Si and/or Si oxide exists on a surface of the steel sheet with an average coating thickness of 1 nm to 20 nm.

公开(公告)号：US09963755B2

公开(公告)日：2018-05-08

申请号：US14680302

申请日：2015-04-07

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C23C30/00 ,  C23C28/00 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C22C38/34 ,  C22C38/32 ,  C22C38/28 ,  C22C38/14 ,  C22C38/60 ,  C22C38/06 ,  C22C38/38 ,  B32B15/00 ,  C21D8/02 ,  C23C2/28 ,  B32B15/01 ,  B32B15/04 ,  C23C2/06 ,  B32B15/18 ,  C22C18/00 ,  C22C38/18 ,  C23C10/28 ,  C25D5/48 ,  C25D5/50 ,  C21D1/673 ,  C23C2/26 ,  C23C10/60 ,  C23C26/00 ,  C25D3/56 ,  C21D8/04

CPC classification number: C21D8/0247 ,  B32B15/01 ,  B32B15/013 ,  B32B15/015 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/673 ,  C21D8/0457 ,  C21D2251/02 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C10/28 ,  C23C10/60 ,  C23C26/00 ,  C23C28/321 ,  C23C28/322 ,  C23C28/325 ,  C23C28/345 ,  C23C30/005 ,  C25D3/565 ,  C25D5/48 ,  C25D5/50 ,  Y10T428/12486 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12674 ,  Y10T428/12757 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/12806 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/264 ,  Y10T428/265

Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.

公开(公告)号：US11248277B2

公开(公告)日：2022-02-15

申请号：US16615004

申请日：2018-04-24

Applicant: JFE STEEL CORPORATION

Inventor： Shotaro Terashima ,  Yusuke Fushiwaki ,  Yoichi Makimizu ,  Hiroyuki Masuoka ,  Hiroshi Hasegawa

IPC: C21D9/46 ,  C23C2/02 ,  C23C2/06 ,  C23G1/08 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/32

Abstract: A method for manufacturing a high-strength galvanized steel sheet having excellent strength-elongation balance, coating adhesiveness, and surface appearance. The method includes: (i) a first heating process of heating a steel sheet having a predetermined chemical composition, (ii) a first pickling process of pickling the steel sheet which was subjected to the first heating process in an oxidizing acidic aqueous solution, (iii) a second pickling process of pickling the steel sheet which was subjected to the first pickling process in a non-oxidizing acidic aqueous solution, (iv) a second heating process of holding the steel sheet, which was subjected to the second pickling process, at a temperature range of 700° C. or higher and 900° C. or lower in a hydrogen-containing atmosphere for 20 seconds or more and 300 seconds or less, and (v) performing a galvanizing treatment on the steel sheet which was subjected to the second heating process.

公开(公告)号：US20220029115A1

公开(公告)日：2022-01-27

申请号：US17297151

申请日：2019-12-09

Applicant: JFE Steel Corporation

Inventor： Mikito Suto ,  Hiroyuki Masuoka ,  Akira Matsuzaki

IPC: H01L51/44

Abstract: Provided is a laminate with which an organic thin-film solar cell having excellent output characteristics, even in an LED light irradiation environment, can be obtained. A titanium oxide layer that serves as an electron transport layer and is positioned on a member that serves as an optically transparent electrode layer has a thickness of 1.0 nm to 60.0 nm, inclusive, and satisfies condition 1 or condition 2. Condition 1: The titanium oxide layer contains an indium metal and an indium oxide, wherein, if the content of elemental titanium is denoted as Ti, the content of the indium metal is denoted as InM, and the content of the indium oxide is denoted as InOx, the atomic ratio (InM/Ti) is 0.10 to 0.25, inclusive, and the atomic ratio (InOx/Ti) is 0.50 to 10.00, inclusive. Condition 2: The titanium oxide layer contains a tin metal and a tin oxide, wherein, if the content of the elemental titanium is denoted as Ti, the content of the tin metal is denoted as SnM, and the content of the tin oxide is denoted as SnOx, the atomic ratio (SnM/Ti) is 0.05 to 0.30, inclusive, and the atomic ratio (SnOx/Ti) is 0.50 to 10.00, inclusive.

公开(公告)号：US11085099B2

公开(公告)日：2021-08-10

申请号：US15999603

申请日：2017-02-15

Applicant: JFE Steel Corporation

Inventor： Shimpei Yoshioka ,  Yoshihiko Ono ,  Hiroyuki Masuoka

IPC: C22C38/00 ,  C22C38/02 ,  C22C38/06 ,  C22C38/10 ,  C22C38/12 ,  C22C38/14 ,  C22C38/20 ,  C22C38/38 ,  C21D9/46 ,  C21D6/00 ,  C21D8/02 ,  C23G1/08

Abstract: A high-strength cold-rolled steel sheet has a composition that contains, in terms of mass %, C: 0.10% or more and 0.50% or less, Si: 1.0% or more and 3.0% or less, Mn: 1.0% or more and 2.5% or less, P: 0.05% or less, S: 0.02% or less, Al: 0.01% or more and 1.5% or less, N: 0.005% or less, Cu: 0.05% or more and 0.50% or less, and the balance being Fe and unavoidable impurities, wherein a proportion of a steel sheet surface covered with oxides mainly composed of Si is 1% or less, a proportion of the steel sheet surface covered with Fe oxides is 40% or less, CuS/CuB is 4.0 or less, and a tensile strength is 1180 MPa or more, when CuS denotes the Cu content in a steel sheet surface layer and CuB denotes the Cu content in a base material.

公开(公告)号：US20140216610A1

公开(公告)日：2014-08-07

申请号：US14093995

申请日：2013-12-02

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C21D8/02

CPC classification number: C21D8/0247 ,  B32B15/01 ,  B32B15/013 ,  B32B15/015 ,  B32B15/04 ,  B32B15/043 ,  B32B15/18 ,  C21D1/673 ,  C21D8/0457 ,  C21D2251/02 ,  C22C18/00 ,  C22C38/001 ,  C22C38/002 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/14 ,  C22C38/18 ,  C22C38/28 ,  C22C38/32 ,  C22C38/34 ,  C22C38/38 ,  C22C38/60 ,  C23C2/06 ,  C23C2/26 ,  C23C2/28 ,  C23C10/28 ,  C23C10/60 ,  C23C26/00 ,  C23C28/321 ,  C23C28/322 ,  C23C28/325 ,  C23C28/345 ,  C23C30/005 ,  C25D3/565 ,  C25D5/48 ,  C25D5/50 ,  Y10T428/12486 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/1266 ,  Y10T428/12674 ,  Y10T428/12757 ,  Y10T428/12792 ,  Y10T428/12799 ,  Y10T428/12806 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12972 ,  Y10T428/12979 ,  Y10T428/2495 ,  Y10T428/24967 ,  Y10T428/264 ,  Y10T428/265

Abstract: A hot-pressed member includes a steel sheet, a Ni-diffusion region present in a surface layer of the steel sheet, and an intermetallic compound layer and a ZnO layer which are provided in order on the Ni-diffusion region, the intermetallic compound layer corresponding to a γ phase present in a phase equilibrium diagram of a Zn—Ni alloy, wherein a spontaneous immersion potential indicated in a 0.5 M NaCl aqueous air-saturated solution at 25° C.±5° C. is −600 to −360 mV based on a standard hydrogen electrode.

Abstract translation: 热压部件包括钢板，存在于钢板的表层中的Ni扩散区域和在Ni扩散区域上依次设置的金属间化合物层和ZnO层，金属间化合物层 对应于存在于Zn-Ni合金的相平衡图中的γ相，其中在25℃±5℃下在0.5M NaCl饱和空气饱和溶液中指示的自发浸渍电位为-600至-360 基于标准氢电极的mV。

公开(公告)号：US11683944B2

公开(公告)日：2023-06-20

申请号：US17760631

申请日：2020-09-28

Applicant: JFE Steel Corporation ,  NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY

Inventor： Mikito Suto ,  Hiroyuki Masuoka ,  Akira Matsuzaki ,  Hiroki Habazaki ,  Hikaru Kobayashi

IPC: H01L31/00 ,  H10K30/82 ,  H10K30/30 ,  H10K30/40 ,  H10K71/60 ,  H10K102/10

CPC classification number: H10K30/82 ,  H10K30/30 ,  H10K30/40 ,  H10K71/60 ,  H10K2102/101

Abstract: A laminate which allows to obtain an organic thin-film solar cell having excellent output characteristics and transparency is provided. The laminate as above has a titanium oxide layer that is disposed on the member serving as a light-transmissive electrode layer and serves as an electron transport layer. The titanium oxide layer has a thickness of not less than 1.0 nm and not more than 200.0 nm. The titanium oxide layer contains indium oxide and metallic indium, InOx/Ti is not less than 0.50 and not more than 20.00 in atomic ratio, and InM/Ti is less than 0.100 in atomic ratio, where an elemental titanium content is represented by Ti, an indium oxide content is represented by InOx, and a metallic indium content is represented by InM.

公开(公告)号：US20220029117A1

公开(公告)日：2022-01-27

申请号：US17297160

申请日：2019-12-09

Applicant: JFE Steel Corporation

Inventor： Mikito Suto ,  Hiroyuki Masuoka ,  Akira Matsuzaki

IPC: H01L51/44 ,  H01L51/42

Abstract: Provided is a novel method for producing a laminate that serves as an electron transport layer and an optically transparent electrode layer of a perovskite solar cell having, in the following order, an optically transparent electrode layer, an electron transport layer, a perovskite crystal layer, a hole transport layer, and a current collecting layer. The method involves forming a titanium oxide layer that serves as the electron transport layer on a member that serves as the optically transparent electrode layer by utilizing said member for cathode polarization in a treatment liquid containing a Ti component.

公开(公告)号：US11066721B2

公开(公告)日：2021-07-20

申请号：US16065419

申请日：2016-11-08

Applicant: JFE STEEL CORPORATION

Inventor： Masaki Koba ,  Yoshitsugu Suzuki ,  Hiroyuki Masuoka

IPC: C21D6/00 ,  C21D8/02 ,  C21D9/46 ,  C22C38/14 ,  C22C38/12 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C2/28 ,  C23C2/40 ,  B32B15/01 ,  C23C2/02 ,  C23C2/06 ,  C23C2/26 ,  C23G1/08 ,  C23C28/00 ,  C23C2/04 ,  C23C28/02 ,  B32B15/18 ,  C23C30/00 ,  B32B7/04 ,  C21D8/04 ,  B32B15/04 ,  B32B7/02 ,  C23G1/00

Abstract: A high-strength hot-dip coated hot-rolled steel sheet excellent in terms of surface appearance quality and coating adhesiveness and a method for manufacturing. The method includes performing hot rolling followed by pickling on steel to form a pickled steel sheet, the steel having a chemical composition containing, by mass %, C: 0.02% or more and 0.30% or less, Si: 0.01% or more and 1.0% or less, Mn: 0.3% or more and 2.5% or less, P: 0.08% or less, S: 0.02% or less, Al: 0.001% or more and 0.20% or less, and Fe and inevitable impurities. The method further includes performing rolling with a rolling reduction ratio of 1% or more and 10% or less, and a hot-dip coating treatment. The obtained steel sheet has an arithmetic average roughness Ra of 2.0 μm or less on the surface of the steel sheet, and a tensile strength of 590 MPa or more.

公开(公告)号：US10316381B2

公开(公告)日：2019-06-11

申请号：US14094003

申请日：2013-12-02

Applicant: JFE STEEL CORPORATION

Inventor： Hiroki Nakamaru ,  Seiji Nakajima ,  Tatsuya Miyoshi ,  Hiroyuki Masuoka ,  Shinji Ootsuka

IPC: C21D8/02 ,  C23C2/28 ,  B32B15/01 ,  B32B15/04 ,  C23C2/06 ,  B32B15/18 ,  C25D3/56 ,  B21D22/20 ,  C21D8/00 ,  B21D22/00 ,  C22C18/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/18 ,  C22C38/32 ,  C22C38/60 ,  C23C10/28 ,  C25D5/48 ,  C25D5/50 ,  C21D1/673 ,  C23C2/26 ,  C23C10/60 ,  C23C26/00 ,  C23C28/00 ,  C22C38/00 ,  C22C38/14 ,  C22C38/28 ,  C22C38/34 ,  C22C38/38 ,  C23C30/00 ,  C21D8/04

Abstract: A method is provided for producing a hot-pressed member including heating a Ni-based coated steel sheet, which includes, on a surface thereof, a Zn—Ni alloy coating layer containing 13% by mass or more of Ni, in a temperature region of an Ac3 transformation point to 1200° C.; and then hot-pressing the steel sheet.