Sliding bearing element

Patent metadata

Field	Value
Publication number	US-10690186-B2
Application number	US-201615741569-A
Country	US
Kind code	B2
Filing date	Jul 5, 2016
Priority date	Jul 6, 2015
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

The invention relates to a sliding bearing element (1) comprising a supporting layer (2) and a sliding layer (3), the sliding layer (3) being made of silver or silver having a maximum content of other metals of 5% by weight, selected from a group consisting of Cu, Sb, Mo, Co, and the sliding layer (3) has a microstructure with grains (6, 7) and has a sliding layer thickness (12). The microstructure changes on the sliding layer thickness (12) from a globular habitus of the grains (7) in the region of a second surface (9) of the sliding layer (3) closer to the supporting layer (2) to a habitus in an at least approximately columnar form, a longitudinal extension (10) of the grains (7) being arranged in the region of a first surface (8) of the sliding layer (3) farther away from the supporting layer (2).

First claim

The invention claimed is:

1. Sliding bearing element ( 1 ) comprising a supporting layer ( 2 ) and a sliding layer ( 3 ), the sliding layer ( 3 ) being made of silver or silver having a maximum content of other metals of 5% by weight, selected from a group consisting of Cu, Sb, Mo, Co, and the sliding layer ( 3 ) has a microstructure with grains ( 6 , 7 ) and has a sliding layer thickness ( 12 ),
wherein the microstructure across the sliding layer thickness ( 12 ) changes from a globular habitus of the grains ( 7 ) in the region of a second surface ( 9 ) of the sliding layer ( 3 ) closer to the supporting layer ( 2 ) to a habitus in an at least approximately columnar form, a longitudinal extension ( 10 ) of the grains ( 7 ) being arranged in a region of a first surface ( 8 ) of the sliding layer ( 3 ) farther away from the supporting layer ( 2 ); and
wherein a component to be mounted slides on the sliding layer.

2. Sliding bearing element according to claim 1 , wherein the sliding layer ( 3 ) has a sliding layer thickness ( 12 ) of between 10 μm and 100 μm.

3. Sliding bearing element ( 1 ) according to claim 1 , wherein the columnar microstructure extends from the first surface ( 8 ) of the sliding layer ( 3 ) as far as a depth ( 13 ) of the sliding layer ( 3 ) of at least 10% and at most 95% of the total sliding layer thickness ( 12 ).

4. Sliding bearing element ( 1 ) according to claim 1 , wherein the sliding layer ( 3 ) is disposed directly on the supporting layer ( 2 ) and bonded to it.

5. Sliding bearing element ( 1 ) according to claim 1 , wherein the grains ( 6 ) with the columnar habitus are oriented with their longitudinal extension ( 10 ) at least approximately perpendicular to the first surface ( 8 ) of the sliding layer ( 3 ) or longitudinal axes ( 15 ) of the grains ( 6 ) deviate from this perpendicular orientation by at most 30°.

6. Sliding bearing element ( 1 ) according to claim 1 , wherein the longitudinal extension ( 10 ) of the grains ( 6 ) with the columnar microstructure corresponds to at least twice the width extension ( 11 ) of the grains ( 6 ) with the columnar microstructure.

7. Sliding bearing element ( 1 ) according to claim 1 , wherein an average diameter of the grains ( 7 ) with the globular habitus is at most 20% of the length in the longitudinal extension ( 10 ) of the grains ( 6 ) with the columnar habitus.

8. Method for producing a sliding bearing element ( 1 ) comprising a supporting layer ( 2 ) and a sliding layer ( 3 ) having a microstructure with grains ( 6 , 7 ), which sliding layer ( 3 ) is produced with a sliding layer thickness ( 12 ) made of silver or silver with a maximum content of other metals of 5% by weight, selected from a group consisting of Cu, Sb, Mo, Co, by means of a PVD process,
wherein the temperature is increased during production of the sliding layer ( 3 ) by a value selected from a range of 10° C. to 50° C., as a result of which the microstructure across the sliding layer thickness ( 12 ) changes from a globular habitus of the grains ( 7 ) in the region of a second surface ( 9 ) of the sliding layer ( 3 ) closer to the supporting layer ( 2 ) to a habitus in an at least approximately columnar form with a longitudinal extension ( 10 ) of the grains ( 6 ) in the region of a first surface ( 8 ) of the sliding layer ( 3 ) farther away from the supporting layer ( 2 ); and
wherein a component to be mounted slides on the sliding layer.

Assignees

• Miba Gleitlager Austria Gmbh

Inventors

• Nagl Johann
• Uebleis Christian

Classifications

• C23C14/165 Primary

  by cathodic sputtering · CPC title

• C23C14/3492

  Variation of parameters during sputtering · CPC title

• F16C33/122 Primary

  Multilayer structures of sleeves, washers or liners · CPC title

• F16C17/02

  for radial load only · CPC title

• C25D7/10

  Bearings · CPC title