公开(公告)号：US20200040438A1

公开(公告)日：2020-02-06

申请号：US16653183

申请日：2019-10-15

Applicant: ArcelorMittal

Inventor： Lydia RACHIELE ,  Herve DERULE ,  Delphine THAI

IPC: C23C2/06 ,  C23C2/26 ,  C23C22/05 ,  C23F11/14 ,  C25D3/22 ,  C25D5/48

Abstract: A coated metal sheet is provided. The coated metal sheet includes a steel substrate, a metal coating on at least one face of the steel substrate, the metal coating comprising at least 40% by weight of zinc; and a layer coating an outer surface of the metal coating, the layer including an amino acid in a neutral or salt form, the amino acid being selected from among alanine, arginine, aspartic acid, cysteine, glutamine, lysine, methionine, proline, serine, threonine, or of a mixture thereof, the amount of said amino acid or of said mixture being from 0.1 to 200 mg/m2, and optionally a base or a mixture of bases, or an acid or a mixture of acids.

公开(公告)号：US20200216964A1

公开(公告)日：2020-07-09

申请号：US16648829

申请日：2018-09-14

Applicant: ArcelorMittal

Inventor： Lydia RACHIELE ,  Frida GILBERT ,  Christophe KLAM ,  Akshay BANSAL

IPC: C23C22/53 ,  C23C2/06 ,  C23C2/26 ,  C23C22/68 ,  C23C22/74 ,  C23C28/00

Abstract: A steel substrate coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a zincsulphate-based layer—includes at least one of the compounds selected from among zincsulphate monohydrate, zincsulphate tetrahydrate and zincsulphate heptahydrate, wherein the zincsulphate-based layer has neither zinc hydroxysulphate nor free water molecules nor free hydroxyl groups, the surface density of sulphur in the zincsulphate-based layer being greater than or equal to 0.5 mg/m2. A corresponding treatment method is provided.

公开(公告)号：US20200299844A1

公开(公告)日：2020-09-24

申请号：US16649246

申请日：2018-09-14

Applicant: ArcelorMittal

Inventor： Lydia RACHIELE ,  Frida GILBERT ,  Herve DERULE

IPC: C23C28/00 ,  C23C2/06 ,  C23C2/40 ,  C23C22/53 ,  C23C22/68 ,  C23C22/82

Abstract: A steel substrate is provided, coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a zincsulphate-based layer including at least one of the compounds selected from among zincsulphate monohydrate, zincsulphate tetrahydrate and zincsulphate heptahydrate, wherein the zincsulphate-based layer has neither zinc hydroxysulphate nor free water molecules nor free hydroxyl groups, the surface density of sulphur in the zincsulphate-based layer being greater than or equal to 0.5 mg/m2. A corresponding treatment method is also provided.

公开(公告)号：US20240093375A1

公开(公告)日：2024-03-21

申请号：US17768009

申请日：2020-10-12

Applicant: ArcelorMittal

Inventor： Frida GILBERT ,  Lydia RACHIELE ,  Delphine THAI ,  Christian ALLELY

IPC: C23C22/53 ,  C23C22/82 ,  C23C28/00

CPC classification number: C23C22/53 ,  C23C22/82 ,  C23C28/3225 ,  C23C28/34

Abstract: The invention relates to a steel substrate coated on at least one of its faces with a metallic coating based on zinc or its alloys wherein the metallic coating is itself coated with a conversion layer comprising:



zincsulphate hydrate,
aluminium in an amount up to 14 mg·m−2,
wherein the conversion layer comprises neither zinc hydroxysulphate, nor free water molecules nor any compounds having free hydroxyl groups, the surface density of sulphur in the conversion layer being greater than or equal to 5.0 mg/m2. The invention also relates to the corresponding treatment method.

公开(公告)号：US20180023177A1

公开(公告)日：2018-01-25

申请号：US15546262

申请日：2016-02-01

Applicant: ARCELORMITTAL

Inventor： Lydia RACHIELE ,  Herve DERULE ,  Delphine THAÏ

IPC: C23C2/06 ,  C25D5/48 ,  C23F11/14 ,  C25D3/22 ,  C23C2/26 ,  C23C22/05

Abstract: The invention relates to a method for preparing a metal sheet (1) comprising at least the steps of: providing a steel substrate (3) having two faces (5), for which at least one is coated with a metal coating (7) comprising at least 40% by weight of zinc, applying on the outer surface (15) of the metal coating (7) an aqueous solution comprising an amino acid, and the metal sheet which may be obtained.

公开(公告)号：US20180016681A1

公开(公告)日：2018-01-18

申请号：US15546614

申请日：2016-02-01

Applicant: ArcelorMittal

Inventor： Lydia RACHIELE ,  Hervé DERULE ,  Delphine THAÏ

IPC: C23C22/53 ,  C23F11/14 ,  C23C22/68 ,  C23C2/26 ,  C25D5/48 ,  C23C2/06 ,  C23C22/78

CPC classification number: C23C22/53 ,  C23C2/06 ,  C23C2/26 ,  C23C22/68 ,  C23C22/78 ,  C23F11/144 ,  C25D5/48

Abstract: The invention relates to a method for preparing a metal sheet (1) comprising at least the steps: providing a steel substrate (3) having two faces (5), at least one of which is coated with a metal coating (7) comprising at least 40% by weight of zinc, applying on the outer surface (15) of the metal coating (7) an aqueous solution comprising an amino acid, and the metal sheet which may be obtained.