Coating method and coating for a bearing component

Patent metadata

Field	Value
Publication number	US-9653193-B2
Application number	US-201214124197-A
Country	US
Kind code	B2
Filing date	Apr 17, 2012
Priority date	Jun 7, 2011
Publication date	May 16, 2017
Grant date	May 16, 2017

Abstract

A coating method for producing an electrically insulating coating on a bearing component, wherein, in a first step, a substance mixture comprising at least a) a silane and/or siloxane compound, b) a metal alcoholate, and c) PEEK and/or PTFE in the form of a dispersion is applied to the bearing component and, in a second step, is solidified on the component surface by means of a laser beam.

First claim

The invention claimed is:

1. A coating method for producing an electrically insulating coating on a bearing component, comprising:
applying in a first step a composition including at least: a) a silane and/or siloxane compound, b) a metal alkoxide, and c) polyether ether ketone or polytetrafluoroethylene as a dispersion to a surface of the bearing component; and
consolidating the composition in a second step by a laser beam to form an electrically-insulating layer on the surface of the component.

2. The coating method as recited in claim 1 further comprising drying in an intermediate step, located temporally between the first step and the second step, the composition at a temperature of between 100 and 200° C.

3. The coating method as recited in claim 1 wherein the composition further comprises an organic colorant.

4. The coating method as recited in claim 3 wherein the organic colorant comprises carbon black.

5. The coating method as recited in claim 1 wherein the applied composition has a thickness at least twice a wavelength of the laser beam used in the second step.

6. The coating method as recited in claim 1 wherein the first and second steps are carried out under inert gas atmosphere or vacuum.

7. The coating method as recited in claim 1 wherein a temperature during the first and second steps does not exceed a tempering temperature of a material of the bearing component.

8. The coating method as recited in claim 1 wherein the coating method is used to apply a coating 1 to 10 μm thick to the bearing component.

9. The coating method as recited in claim 1 wherein the first step forms a sol-gel layer.

10. The coating method as recited in claim 1 wherein the electrically-insulating layer is pore free.

11. The coating method as recited in claim 1 wherein the silane and/or siloxane compound is an acyloxysilane, alkylsilane, aminosilane, bis-silyl-silane, epoxysilane, fluoro-alkylsilane, glycidyloxysilane, isocyanato-silane, mercapto-silane, (meth)acrylato-silane, sulfur-containing silane, ureidosilane, or vinylsilane, and/or a corresponding siloxane.

12. The coating method as recited in claim 1 wherein the silane and/or siloxane compound is an organically modified silane.

13. The coating method as recited in claim 12 wherein the organically modified silane is one of tetraethoxyorthosilane, methyltriethoxysilane or methacryloyloxypropyltrimethoxysilane.

Assignees

• Windrich Juergen
• Hosenfeldt Tim Matthias
• Schillinger Helmut
• Schaeffler Technologies Ag

Inventors

• Windrich Juergen
• Hosenfeldt Tim Matthias
• Schillinger Helmut

Classifications

• H01B3/427 Primary

  Polyethers · CPC title

• B05D3/06

  by exposure to radiation (B05D3/02 takes precedence {; plasma treatment B05D3/141}) · CPC title

• B05D5/08

  to obtain an anti-friction or anti-adhesive surface (rendering particulate materials free-flowing in general, e.g. making them hydrophobic B01J2/30) · CPC title

• B05D5/083

  involving the use of fluoropolymers · CPC title

• H01B3/445

  from vinylfluorides or other fluoroethylenic compounds · CPC title