Wear-resistant coating produced by electrodeposition and process therefor

Patent metadata

Field	Value
Publication number	US-10428437-B2
Application number	US-201414484459-A
Country	US
Kind code	B2
Filing date	Sep 12, 2014
Priority date	Sep 18, 2013
Publication date	Oct 1, 2019
Grant date	Oct 1, 2019

Abstract

Disclosed is process for producing a wear-resistant coating on a component. The process comprises providing an electrolyte which contains Co and/or Ni, dispersing first particles comprising hard material particles and/or slip material particles in the electrolyte, dispersing second particles comprising metal alloy particles in which the metal alloy comprises chromium and aluminum in the electrolyte, providing a component to be coated in a bath of the electrolyte which has first and second particles dispersed therein, and electrodepositing a matrix of Co and/or Ni with incorporated first and second particles on the component. A correspondingly produced wear-resistant coating is also disclosed.

First claim

What is claimed is:

1. A coating, wherein the coating is wear-resistant and comprises an electrodeposited matrix which comprises from 15% by weight to 50% by weight Co, from 15% by weight to 50% by weight Ni, from 10% by weight to 30% by weight Cr, and from 1% by weight to 10% by weight Al, and in which first particles comprising hard material particles and/or slip material particles are incorporated in a proportion of from 5% by volume to 40% by volume.

2. The wear-resistant coating of claim 1 , wherein the coating comprises the hard material particles and/or slip material particles in a proportion of from 10% by volume to 30% by volume.

3. The wear-resistant coating of claim 1 , wherein the matrix comprises from 20% by weight to 40% by weight Co, from 20% by weight to 40% by weight Ni, from 10% by weight to 25% by weight Cr and from 2% by weight to 8% by weight Al.

4. The wear-resistant coating of claim 1 , wherein the first particles have a maximum or average particle size of less than or equal to 10 μm.

5. The wear-resistant coating of claim 1 , wherein the slip material particles comprise a solid lubricant.

6. The wear-resistant coating of claim 5 , wherein the solid lubricant comprises hexagonal boron nitride.

7. The wear-resistant coating of claim 1 , wherein the hard material particles comprise oxides.

8. The wear-resistant coating of claim 7 , wherein the hard material particles comprise chromium oxide and/or zirconium oxide.

9. The wear-resistant coating of claim 1 , wherein the first particles comprise hard material particles and slip material particles.

10. The wear-resistant coating of claim 9 , wherein the slip material particles comprise a solid lubricant and the hard material particles comprise oxides.

11. The wear-resistant coating of claim 10 , wherein the slip material particles comprise hexagonal boron nitride.

12. The wear-resistant coating of claim 10 , wherein the hard material particles comprise chromium oxide and/or zirconium oxide.

13. A coating, wherein the coating is wear-resistant and comprises an electrodeposited matrix which comprises from 15% by weight to 50% by weight Co, from 15% by weight to 50% by weight Ni, from 10% by weight to 30% by weight Cr, and from 1% by weight to 10% by weight Al, and in which first particles comprising A hard material particles and/or slip material particles are incorporated in a proportion of from 5% by volume to 40% by volume and wherein the coating has been obtained by a process which comprises:
(a) dispersing the first particles and second particles which comprise metal alloy particles in which the metal alloy comprises chromium and aluminum in an electrolyte which comprises Co and/or Ni;
(b) providing a component to be coated in a bath of the electrolyte which has the first and second particles dispersed therein;
(c) electrodepositing the matrix with incorporated first and second particles on the component; and
(d) subjecting the component with the electrodeposited matrix to a heat treatment.

14. The wear-resistant coating of claim 13 , wherein the heat treatment is carried out at a temperature of from 950° C. to 1200° C. for from 2 to 20 h.

15. The wear-resistant coating of claim 13 , wherein the heat treatment is carried out in vacuo.

16. The wear-resistant coating of claim 13 , wherein the electrolyte comprises NiSO 4 and/or CoSO 4 .

17. The wear-resistant coating of claim 13 , wherein the electrolyte comprises NaCl and/or H 3 BO 3 .

18. The wear-resistant coating of claim 13 , wherein the first and second particles are each provided in the electrolyte in a proportion of from 50 g/l to 300 g/l.

Assignees

• MTU Aero Engines AG

Inventors

• Werner André
• Linska Josef

Classifications

• B22F1/09

  Mixtures of metallic powders · CPC title

• C22C19/058

  without Mo and W · CPC title

• Y10T428/12056

  Entirely inorganic · CPC title

• Y10T428/12049

  Nonmetal component · CPC title

• C22C30/00

  Alloys containing less than 50% by weight of each constituent · CPC title