Multi-layer substrate

Patent metadata

Field	Value
Publication number	US-10619250-B2
Application number	US-201415301821-A
Country	US
Kind code	B2
Filing date	Apr 4, 2014
Priority date	Apr 4, 2014
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

Substrate provided with a plurality of layers, at least one of which includes metal oxides and is topped directly by a metal coating layer that contains at least 8% by weight nickel and at least 10% by weight chromium, the remainder being iron, additional elements and the impurities resulting from the fabrication process, wherein this metal coating layer is topped directly by an anticorrosion coating layer. A corresponding fabrication method is also provided.

First claim

What is claimed is:

1. A substrate provided with a plurality of layers comprising:
an oxide layer including metal oxides;
a metal coating layer topping and in direct contact with 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, additional elements and impurities, the impurities resulting from a fabrication process;
an anti-corrosion coating layer topping and in direct contact with the metal coating layer; and
a steel sheet located under the oxide layer.

2. The substrate provided with a plurality of layers as recited in claim 1 , wherein the metal coating layer includes stainless steel comprising from 10 to 13% by weight nickel, from 16 to 18% by weight chromium, and the remainder being iron and impurities resulting from the fabrication process.

3. The substrate provided with a plurality of layers as recited in claim 1 , wherein the metal coating layer includes, at least one layer of stainless steel containing about 0.02% by weight carbon, from 16 to 18% by weight chromium, from 10.5 to 13% by weight nickel, from 2 to 2.5% by weight molybdenum, from 0.9 to 1.3% by weight silicon, from 1.8 to 2.2% by weight manganese, the remainder being iron and impurities resulting from the fabrication process.

4. The substrate provided with a plurality of layers as recited in claim 1 , wherein the metal coating layer has a thickness between 2 and 15 nm.

5. The substrate provided with a plurality of layers as recited in claim 1 , wherein the anti-corrosion coating layer includes a metal selected from the group consisting of zinc, aluminum, copper, magnesium, titanium, nickel, chromium, manganese and their alloys.

6. The substrate provided with a plurality of layers as recited in claim 5 , wherein the anti-corrosion coating layer includes zinc or a zinc alloy.

7. The substrate provided with a plurality of layers as recited in claim 1 , wherein the anti-corrosion coating layer includes a plurality of sub-layers of metal coatings.

8. The substrate provided with a plurality of layers as recited in claim 1 , further comprising a further anti-corrosion layer that is located under the oxide layer and in direct contact with the oxide layer.

9. The substrate provided with a plurality of layers as recited in claim 1 , wherein the steel sheet has a strength greater than or equal to 450 MPa.

10. The substrate provided with a plurality of layers as recited in claim 1 , wherein the steel sheet is in direct contact with the oxide layer.

11. A substrate provided with a plurality of layers comprising:
a metal sheet,
at least one surface of the metal sheet having an oxide layer, the oxide layer being topped by and in direct contact with a first metal coating layer, the first metal coating layer including:
at least 8% by weight nickel;
at least 10% by weight chromium; and
a remainder being iron, additional elements and impurities, the impurities resulting from a first fabrication process,

the first metal coating layer being topped by and in direct contact with a first anti-corrosion coating layer; and
a second oxide layer including metal oxides, the second oxide layer topping and in direct contact with the first anti-corrosion coating layer;
a second metal coating layer topping and in direct contact with the second oxide layer, the second metal coating layer including:
at least 8% by weight nickel;
at least 10% by weight chromium, and
a remainder being iron, additional elements and impurities, the impurities resulting from a second fabrication process; and

a second anti-corrosion coating layer topping and in contact with the second metal coating layer.

12. The substrate provided with a plurality of layers as recited in claim 11 , wherein the first anti-corrosion coating layer includes a metal selected from the group consisting of zinc, aluminum, copper, magnesium, titanium, nickel, chromium, manganese, and alloys of aluminum, copper, magnesium, titanium, nickel, chromium, and manganese.

13. A substrate provided with a plurality of layers comprising:
a steel sheet,
at least one surface of the steel sheet having an oxide layer, the oxide layer being topped by and in direct contact with a first metal coating layer, the first metal coating layer including:
at least 8% by weight nickel;
at least 10% by weight chromium; and
a remainder being iron, additional elements and impurities, the impurities resulting from a first fabrication process,

the first metal coating layer being topped by and in direct contact with a first anti- corrosion coating layer; and
a second oxide layer including metal oxides topping and in direct contact with the first anti-corrosion coating layer;
a second metal coating layer topping and in direct contact with the second oxide layer, the second metal coating layer including:
at least 8% by weight nickel;
at least 10% by weight chromium, and
a remainder being iron, additional elements and impurities, the impurities resulting from a second fabrication process; and

a second anti-corrosion coating layer over and in contact with the second metal coating layer.

14. The substrate provided with a plurality of layers as recited in claim 13 , wherein the first anti-corrosion coating layer includes a metal selected from the group consisting of zinc, aluminum, copper, magnesium, titanium, nickel, chromium, manganese and their alloys.

15. The substrate provided with a plurality of layers as recited in claim 13 , wherein the steel sheet is in direct contact with the oxide layer.

Assignees

• Arcelormittal

Inventors

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

Classifications

• C23C28/345

  with at least one oxide layer · CPC title

• C23C28/42

  characterized by the composition of the alternating layers · CPC title

• Y10T428/265

  1 mil or less · CPC title

• B32B2255/06

  on metal layer · CPC title

• Y10T428/24967

  Absolute thicknesses specified · CPC title