# US 10,767,694 B2 · Manufacturing method for sliding member and sliding member

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- Number: US 10,767,694 B2
- Document ID: US10767694B2
- Status: Granted
- Kind: B2
- Application number: 16/475,907
- Filed: 2018-03-05
- Published: 2019-11-14
- Granted: 2020-09-08
- Earliest claimed: 2017-03-23
- Assignees: KYB Corporation
- Applicants: KYB Corporation
- Inventors: Takuya Nakase
- Web page: https://patentgrep.com/patent/US10767694B2

## CPC

- C25D 11/16: Pretreatment {, e.g. desmutting}
- F16C 33/121: {Use of special materials}
- C25D 11/02: Anodisation
- C25D 11/026: {Anodisation with spark discharge}
- C25D 15/00: Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
- F16C 29/02: Sliding-contact bearings
- F16C 33/125: {Details of bearing layers, i.e. the lining}
- F16C 2202/04: Hardness
- F16C 2206/04: Diamond like carbon [DLC]
- F16C 2206/56: based on ceramic carbides, e.g. silicon carbide (SiC)
- F16C 2223/42: by spraying the coating material, e.g. plasma spraying
- F16C 2223/70: by electroplating or electrolytic coating, e.g. anodising, galvanising
- C25D: PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A manufacturing method for a sliding member is a method for manufacturing the sliding member in which a surface of an oxide film covering a metal base material serves as a sliding surface, and includes a dispersion step for dispersing a plurality of hard particles having a higher hardness than the oxide film through a surface layer of the metal base material, an oxide film generation step for generating the oxide film on the surface of the metal base material after the dispersion step, and an exposure step for exposing some of the plurality of hard particles from the surface of the oxide film by partially removing the oxide film.

## Claims

### Claim 1

A manufacturing method for a sliding member in which a surface of an oxide film covering a metal base material serves as a sliding surface, the manufacturing method comprising:
a dispersion step for dispersing a plurality of hard particles having a higher hardness than the oxide film through a surface layer of the metal base material;
an oxide film generation step for generating the oxide film on the surface of the metal base material after the dispersion step; and
an exposure step for exposing some of the plurality of hard particles from the surface of the oxide film by partially removing the oxide film.

### Claim 2 (depends on 1)

The manufacturing method for a sliding member according to claim 1, wherein, in the dispersion step, abrasive grains are dispersed through the surface layer of the metal base material as the hard particles by loose abrasive machining.

### Claim 3 (depends on 1)

The manufacturing method for a sliding member according to claim 1, wherein, in the oxide film generation step, the oxide film is generated on the surface of the metal base material by anodization treatment or plasma electrolytic oxidation treatment.