公开(公告)号：US12043883B2

公开(公告)日：2024-07-23

申请号：US17284933

申请日：2019-08-06

申请人： JFE Steel Corporation

发明人： Takuya Hirashima ,  Yoshihiko Ono

IPC分类号： C22C38/02 ,  C21D8/02 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C25D5/36

CPC分类号： C22C38/02 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0273 ,  C21D9/46 ,  C22C38/04 ,  C22C38/06 ,  C25D5/36 ,  C21D2211/002 ,  C21D2211/008

摘要： A high-yield-ratio high-strength electrogalvanized steel sheet having an electrogalvanized coating layer formed on a surface of a base steel sheet, in which the base steel sheet has a certain chemical composition, and a steel microstructure, in which a total area fraction of one or both of bainite containing carbides having an average grain diameter of 50 nm or less and tempered martensite containing carbides having an average grain diameter of 50 nm or less is 90% or more in the whole of the steel microstructure, and in which a total area fraction of one or both of the bainite containing and the tempered martensite containing carbides is 80% or more in a region from the surface of the base steel sheet to a position located at ⅛ of a thickness of the base steel sheet, and diffusible hydrogen in steel in an amount of 0.20 mass ppm or less.

公开(公告)号：US20230416937A1

公开(公告)日：2023-12-28

申请号：US18463036

申请日：2023-09-07

申请人： POSCO CO., LTD

发明人： Moon-Jae KWON ,  Jae-Yeong LEE ,  Su-Young KIM

IPC分类号： C25D3/56 ,  B21B1/22 ,  B23H1/04 ,  B23H5/04 ,  B32B15/01 ,  C25D5/36 ,  C25D5/52

CPC分类号： C25D3/565 ,  B21B1/22 ,  B23H1/04 ,  B23H5/04 ,  B32B15/013 ,  C25D5/36 ,  C25D5/52

摘要： Provided is a method of manufacturing a zinc-nickel alloy electroplated steel sheet. The method includes operations of: temper rolling a base steel sheet; immersing the temper-rolled base steel sheet in a sulfuric acid bath including nickel sulfate hydrate and zinc sulfate hydrate to form a zinc-nickel plating layer on the base steel sheet; and polishing the zinc-nickel plating layer and processing a hairline pattern.

公开(公告)号：US20230407485A1

公开(公告)日：2023-12-21

申请号：US18251269

申请日：2021-11-05

申请人： JFE STEEL CORPORATION

发明人： Shunsuke YAMAMOTO ,  Katsutoshi TAKASHIMA ,  Mai AOYAMA ,  Yusuke OKUMURA ,  Tomomi KANAZAWA ,  Katsuya HOSHINO ,  Hiroshi MATSUDA ,  Ei OKUMURA ,  Yoichi MAKIMIZU ,  Masaki KOBA

IPC分类号： C23C28/02 ,  C21D9/46 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C21D6/00 ,  C22C33/04 ,  C21D8/02 ,  C21D1/74 ,  C25D3/20 ,  C25D5/36

CPC分类号： C23C28/021 ,  C21D9/46 ,  C22C38/38 ,  C22C38/32 ,  C22C38/28 ,  C22C38/16 ,  C22C38/14 ,  C22C38/12 ,  C22C38/08 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/002 ,  C22C38/001 ,  C21D6/001 ,  C21D6/002 ,  C21D6/005 ,  C21D6/008 ,  C22C33/04 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D1/74 ,  C21D8/0278 ,  C25D3/20 ,  C25D5/36 ,  C21D2251/02 ,  C23C2/28

摘要： Provided is an alloyed galvanized steel sheet with excellent resistance to cracking in resistance welding at a welded portion, even if crystal orientations of an Fe-based electroplating layer and a cold-rolled steel sheet are integrated at a high ratio at the interface between the Fe-based electroplating layer and the cold-rolled steel sheet. The alloyed galvanized steel sheet has a Si-containing cold-rolled steel sheet containing Si in an amount of 0.1 mass % to 3.0 mass %; an Fe-based electroplating layer formed on at least one surface of the Si-containing cold-rolled steel sheet with a coating weight per surface exceeding 20.0 g/m2, and an alloyed galvanized layer formed on the Fe-based electroplating layer, where crystal orientations of the Fe-based electroplating layer and the Si-containing cold-rolled steel sheet are integrated at a ratio of more than 50% at the interface between the Fe-based electroplating layer and the Si-containing cold-rolled steel sheet.

公开(公告)号：US11598009B2

公开(公告)日：2023-03-07

申请号：US16975637

申请日：2019-03-01

申请人： NIPPON STEEL CORPORATION

发明人： Shintaro Yamanaka ,  Masakazu Noda ,  Yasuhiko Sato ,  Nobuo Nakasone

IPC分类号： B32B15/01 ,  C23C28/00 ,  C25D9/10 ,  C25D5/50 ,  C25D9/00 ,  C25D9/08 ,  C25D5/48 ,  C23C22/36 ,  B32B15/04 ,  C23C22/05 ,  C23C30/00 ,  B32B15/18 ,  C25D3/30 ,  C23C22/34 ,  C25D5/36

摘要： A Sn-plated steel sheet including a base plated steel sheet having a steel sheet, a Sn-plated layer on at least one surface of the steel sheet, and a film layer containing a zirconium oxide and a tin oxide. An adhesion amount of Sn per surface of the Sn-plated steel sheet is 0.1 g/m2 or more and 15 g/m2 or less, an amount of the zirconium oxide in the film layer is in a range of 1 mg/m2 or more and 30 mg/m2 or less in terms of an amount of metal Zr, a peak position of a binding energy of Sn3d5/2 of the tin oxide is 1.4 eV or more and less than 1.6 eV from a peak position of a binding energy of metal Sn, and a quantity of electricity required for reduction of the tin oxide is more than 5.0 mC/cm2 and 20 mC/cm2 or less.

公开(公告)号：US20220298663A1

公开(公告)日：2022-09-22

申请号：US17616756

申请日：2020-07-13

申请人： HALDOR TOPSØE A/S

发明人： Tobias Holt NØRBY ,  Rainer KÜNGAS ,  Bengt Peter Gustav BLENNOW ,  Jeppe RASS-HANSEN ,  Thomas HEIREDAL-CLAUSEN

IPC分类号： C25D3/04 ,  C25D5/36 ,  C25D7/06 ,  C25D5/50 ,  H01M8/0228

摘要： In a method for chromium upgrading of interconnects made of ferritic steel to be used in solid oxide cell stacks, comprising the steps of shaping the interconnect, depositing a coating comprising Cr on at least one surface of the shaped interconnect and performing one or more thermal treatments at a temperature below 1000° C., the resulting Cr concentration near the surface of the interconnect is higher than the Cr concentration in the ferritic steel before shaping. Specifically, the average Cr concentration of the shaped interconnect is increased to 26 wt % Cr or higher.

公开(公告)号：US11414772B2

公开(公告)日：2022-08-16

申请号：US17251870

申请日：2019-06-14

申请人： Alberto Todescan

发明人： Alberto Todescan

IPC分类号： C25D3/38 ,  C25D5/36 ,  C25D5/00 ,  C25D5/10 ,  C25D5/12 ,  C25D5/18 ,  C25D3/12 ,  C25D7/06 ,  C25D17/10 ,  C25D21/12

摘要： Described is a cathodic treatment for the electrodeposition of a metal layer securely adherent to the surface of stainless steel objects in an electrolytic bath comprising one or more metals belonging exclusively to the groups from 3 to 12 of the periodic table, excluding the elements nickel, cobalt, cadmium, ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold and rhenium, and methanesulfonic acid with a concentration of between 100 and 400 g/l.
An object of the invention is also a process for applying a metal layer securely adherent to the surface of stainless steel objects, comprising a cathodic treatment as described above.
Moreover, the invention further relates to an object comprising stainless steel equipped with a covering obtained by means of a process of the type described.

公开(公告)号：US20220190562A1

公开(公告)日：2022-06-16

申请号：US17442430

申请日：2020-03-18

申请人： Robert Bosch GmbH

发明人： Christoph Roland Hoelzl ,  Martina Bubrin ,  Milan Pilaski ,  Tim Bergmann

IPC分类号： H01T21/02 ,  C25F1/06 ,  C23G1/19 ,  C23G1/08 ,  C25D5/36 ,  C25D7/00 ,  C25D7/04 ,  C25D17/08 ,  C25D17/10

摘要： A pretreatment method for pretreating components, which are each formed of at least two different materials, prior to a coating process. The pretreatment method includes the steps: alkaline degreasing; chemical pickling in a first pickling medium; anodic pickling in a second pickling medium; and cathodic degreasing.

公开(公告)号：US20220090284A1

公开(公告)日：2022-03-24

申请号：US17479569

申请日：2021-09-20

申请人： Hutchinson Technology Incorporated

发明人： Paul V. Pesavento ,  Collin M. Grove ,  Douglas P. Riemer

IPC分类号： C25D5/36 ,  C23F1/28 ,  C23F17/00

摘要： Treatment solutions and methods for improving adhesion of gold electroplating onto metal surfaces are provided herein. More specifically, the disclosure relates to micro-etching stainless steel surfaces using to remove any organic contamination and chromium oxide formed on the surface, neutralize and strip the surface of any iron content, and repassivate the surface with a thin chromium oxide layer, prior to gold electroplating of the stainless steel surfaces.

公开(公告)号：US11230782B2

公开(公告)日：2022-01-25

申请号：US15984853

申请日：2018-05-21

申请人： SAMSUNG ELECTRONICS CO., LTD.

发明人： Kyung Hwan Lee ,  Young Min Yoo ,  Young Deog Koh ,  Kwang Joo Kim ,  Beom Gon Kim ,  Hyun Seok Shin

IPC分类号： C25D5/36 ,  C25F1/06 ,  C25D11/38 ,  C25D5/50

摘要： A passivation surface treatment method of stainless steel that improves corrosion resistance including in a brine environment without changing the appearance of the surface of stainless steel. A passivation surface treatment method for stainless steel includes: performing degreasing of stainless steel, performing electrolytic pickling where the stainless steel that underwent the degreasing is immersed in a pickling solution having phosphoric acid (H3PO4) and is connected to the anode and a voltage of about 0.5 to 5.0 V for about 10 seconds or more is applied, performing electrolytic degreasing of the stainless steel, and performing electrolytic passivation where the stainless steel that underwent the electrolytic degreasing is immersed in a passivation solution including dichromic acid and chromium sulfate and a voltage of about 0.5 to 5.0 V is applied for 5 seconds or more.

公开(公告)号：US20210245231A1

公开(公告)日：2021-08-12

申请号：US16635782

申请日：2018-07-19

申请人： Groz-Beckert KG

发明人： Jochen Buck ,  Thomas Goller ,  Sven Beis

IPC分类号： B21G1/04 ,  D04B15/06 ,  D04B15/10 ,  D04B27/02 ,  D04B35/02 ,  D05B85/12 ,  C25F3/06 ,  C25D7/00 ,  C25D5/36 ,  C25D3/04

摘要： The invention relates to a textile machine tool part (11) that is used in textile processing in a textile machine and to a method for producing same. The textile machine tool part (11) has a tool core (16) made of a core material and is coated, at least in part, with a wear-resistant coating. The wear-resistant coating (17) is applied to a core surface (18) that has a first microstructure (19). The first microstructure (19) is preferably created using electrochemical etching in the core surface (18). The wear-resistant coating (17) applied thereto is preferably applied directly to at least a section of the core surface (18) having the first microstructure (19) using electrochemical deposition and has a layer thickness of a maximum of 20 μm.