Fabrication method for a multi-layer substrate

Patent metadata

Field	Value
Publication number	US-2020199762-A1
Application number	US-202016810350-A
Country	US
Kind code	A1
Filing date	Mar 5, 2020
Priority date	Apr 4, 2014
Publication date	Jun 25, 2020
Grant date	—

Abstract

A method for fabricating a substrate provided with a plurality of layers, includes: providing a steel substrate with an oxide layer including metal oxides on the steel substrate; providing a metal coating layer directly on the oxide layer, the metal coating layer including: at least 8% by weight nickel; at least 10% by weight chromium; and a remainder being iron and impurities from a fabrication process; and providing an anti-corrosion coating layer directly on the metal coating layer.

First claim

What is claimed is:

1 . A method for fabricating a substrate provided with a plurality of layers, the method comprising:
providing a steel substrate with an oxide layer including metal oxides on the steel substrate; providing a metal coating layer directly on the oxide layer, the metal coating layer including: at least 8% by weight nickel; at least 10% by weight chromium; and a remainder being iron and impurities from a fabrication process; and providing an anti-corrosion coating layer directly on the metal coating layer.

2 . The method as recited in claim 1 wherein the providing of the metal coating layer includes depositing the metal coating layer by a vacuum deposition process.

3 . The method as recited in claim 1 wherein the providing of the metal coating layer includes depositing the metal coating layer by an electro-deposition process.

4 . The method as recited in claim 1 wherein the providing of the metal coating layer occurs includes a magnetron cathode pulverization process.

5 . The method as recited in claim 1 wherein the providing of the anti-corrsion layer includes depositing the anti-corrosion layer by a vacuum deposition process.

6 . The method as recited in claim 1 wherein the providing of the anti-corrosion layer includes depositing the anti-corrosion layer by an electro-deposition process.

7 . The method as recited in claim 1 wherein the steel substrate with the oxide layer is provided without pickling the oxide layer.

8 . The method as recited in claim 1 wherein the oxide layer is in direct contact with the steel substrate.

9 . The method as recited in claim 1 further comprising depositing an aluminum-based coating on the steel substrate, the oxide layer being directly on the aluminum-based coating.

10 . The method as recited in claim 9 wherein the aluminum-based coating is deposited by hot dipping.

11 . The method as recited in claim 9 wherein the aluminum-based coating has a thickness of between 10 and 30 μm.

12 . The method as recited in claim 1 further comprising providing a further oxide layer directly on the anti-corrosion coating layer, a further metal coating layer directly on the further oxide layer; and a remainder being iron and impurities from a fabrication process; and a further anti-corrosion coating layer directly on the further metal coating layer.

13 . A method for preparation of a surface of a substrate comprising:
providing a layer of metal oxides on a steel substrate without pickling the layer of metal oxides; and depositing a metal coating layer directly on the layer of metal oxides, the metal coating layer including at least 8% by weight nickel and at least 10% by weight chromium, a remainder being iron and impurities resulting from a fabrication process.

14 . The method as recited in claim 13 further comprising the step of depositing an anti-corrosion coating layer on the metal coating layer.

15 . The method as recited in claim 13 wherein the anti-corrosion coating layer is deposited directly on the metal coating layer.

Assignees

• Arcelormittal

Inventors

• Chaleix Daniel
• Silberberg Eric
• Schmitz Bruno
• Vanden Eynde Xavier
• Pace Sergio

Classifications

• C23C30/00

  Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process (C23C26/00, C23C28/00 take precedence) · CPC title

• C23C14/34

  Sputtering · CPC title

• C23C14/16

  on metallic substrates or on substrates of boron or silicon · CPC title

• C23C14/5846

  Reactive treatment · CPC title

• C23C14/584

  Non-reactive treatment · CPC title