Sliding material, bearing, and methods of making and using the same

Patent metadata

Field	Value
Publication number	US-2023124045-A1
Application number	US-202218046346-A
Country	US
Kind code	A1
Filing date	Oct 13, 2022
Priority date	Oct 14, 2021
Publication date	Apr 20, 2023
Grant date	—

Abstract

A sliding material including: a substrate, and a textured sliding layer overlying the substrate, where the sliding layer includes asperities including a plurality of apexes and nadirs, where 1) the sliding layer has a root mean square gradient of less than 0.064; 2) the sliding layer has an apex material portion of less than 10%; 3) the sliding layer has a nadir material portion of less than 75%, and where the textured sliding layer induces formation of a film when engaged in a rotational interface w/ another component.

First claim

What is claimed is:

1 . A sliding material comprising:
a substrate, and a textured sliding layer overlying the substrate, wherein the sliding layer comprises asperities comprising a plurality of apexes and nadirs, wherein the sliding layer has a root mean square gradient of less than 0.064, wherein the textured sliding layer induces formation of a film when engaged in a rotational interface w/ another component.

2 . A sliding material comprising:
a substrate, and a textured sliding layer overlying the substrate, wherein the sliding layer comprises asperities comprising a plurality of apexes and nadirs, wherein the sliding layer has an apex material portion of less than 10% and a nadir material portion of less than 75%, wherein the textured sliding layer induces formation of a film when engaged in a rotational interface w/ another component.

3 . An assembly comprising:
a first component; a second component; and a bearing located between the first component and the second component, the bearing comprising:
a substrate, and
a textured sliding layer overlying the substrate, wherein the sliding layer comprises asperities comprising a plurality of apexes and nadirs, wherein the sliding layer has a root mean square gradient of less than 0.064, wherein the textured sliding layer induces formation of a film when engaged in a rotational interface w/ another component.

4 . The sliding material according to claim 1 , wherein the surface of the component has a surface roughness of less than 0.4 microns.

5 . The sliding material according to claim 1 , wherein the substrate comprises a porous metallic is selected from a mesh material, a grid, an expanded sheet, or a perforated sheet.

6 . The sliding material according to claim 1 , wherein the substrate includes aluminum, magnesium, zinc, iron, or an alloy thereof.

7 . The sliding material according to claim 1 , wherein the surface of the component includes aluminum, magnesium, zinc, iron, or an alloy thereof.

8 . The sliding material according to claim 1 , wherein the sliding layer comprises a fluoroploymer.

9 . The sliding material according to claim 1 , wherein the sliding layer comprises a polytetrafluoroethylene (PTFE), a polyamide (PA), a polyether ether ketone (PEEK), a polyimide (PI), a polyamideimide (PAI), a polyphenylene sulfide (PPS), a polyphenylene sulphone (PPSO2), a liquid crystal polymers (LCP), perfluoroalkoxypolymer (PFA), polyoxymethylene (POM), polyethylene (PE), UHMWPE, or a mixture thereof.

10 . The sliding material according to claim 1 , wherein the sliding layer comprises an organic filler comprising polytetrafluoroethylene (PTFE), a polyamide (PA), a polyether ether ketone (PEEK), a polyimide (PI), a polyamideimide (PAI), a polyphenylene sulfide (PPS), a polyphenylene sulphone (PPSO2), a liquid crystal polymers (LCP), perfluoroalkoxypolymer (PFA), polyoxymethylene (POM), polyethylene (PE), UHMWPE, ethylene propylene diene, or a mixture thereof.

11 . The sliding material according to claim 1 , wherein the sliding layer has a thickness of at least about 0.05 mm.

12 . The sliding material according to claim 1 , wherein the sliding layer has a thickness of not greater than about 5 mm.

13 . The sliding material according to claim 1 , wherein the substrate has a thickness of at least about 0.05 mm.

14 . The sliding material according to claim 1 , wherein the substrate has a thickness of not greater than about 5 mm.

15 . The sliding material according to claim 1 , wherein the substrate is embedded in the sliding layer.

16 . The sliding material according to claim 1 , wherein the sliding material is manufactured into a bearing by cutting a blank from the laminate; and
forming a semi-finished bearing from the blank.

17 . The assembly according to claim 3 , wherein the assembly further comprises a grease.

18 . The assembly according to claim 17 , wherein the grease comprises polytetrafluoroethylene.

19 . The assembly according to claim 17 , wherein the nadirs in the sliding layer contain the grease.

20 . The assembly according to claim 17 , wherein the grease is present on 25% of the total surface area of the bearing.

Assignees

• Saint Gobain Performance Plastics Corp

Inventors

• Dong Jing
• Mekhilef Nafih
• Dimartino Vincent
• Murphy Christian

Classifications

• F16C33/208

  Methods of manufacture, e.g. shaping, applying coatings · CPC title

• F16C2326/01

  Parts of vehicles in general · CPC title

• F16C2240/54

  Surface roughness · CPC title

• F16C33/205

  with two layers · CPC title

• F16C33/125

  Details of bearing layers, i.e. the lining · CPC title