Sliding member, and sliding member of internal combustion engine

Patent metadata

Field	Value
Publication number	US-10982622-B2
Application number	US-201816482609-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 3, 2017
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

A sliding member includes a base substrate and a coating layer formed on the base substrate. The coating layer includes a steel portion derived from austenitic stainless steel particles and a copper portion derived from copper particles or copper alloy particles. The steel portion and the copper portion are bonded to each other via an interface between the steel portion and the copper portion.

First claim

The invention claimed is:

1. A sliding member, comprising:
a base substrate; and
a coating layer formed on a sliding portion of the base substrate,
wherein
the coating layer includes a steel portion derived from austenitic stainless steel particles and a copper portion derived from copper particles or copper alloy particles, and
the steel portion and the copper portion are bonded to each other via a first intermetallic compound layer including a constituent element constituting the steel portion and a constituent element constituting the copper portion at an interface between the steel portion and the copper portion, and
the base substrate and the steel portion are bonded to each other via a second intermetallic compound layer at an interface between the base substrate and the steel portion and/or the base substrate and the copper portion are bonded to each other via a third intermetallic compound layer at an interface between the base substrate and the copper portion.

2. The sliding member according to claim 1 , wherein the coating layer includes a hard particle portion derived from hard particles, the hard particle portion being harder than the steel portion.

3. The sliding member according to claim 1 , wherein at least one of the base substrate and the coating layer includes a plastically deformed portion.

4. The sliding member according to claim 2 ,
the hard particles comprising at least one type of hard particles selected from the group consisting of iron-based alloy particles, cobalt-based alloy particles, chromium-based alloy particles, nickel-based alloy particles, molybdenum-based alloy particles, or ceramic particles.

5. The sliding member according to claim 2 , wherein the base substrate and the hard particle portion are bonded to each other via a fourth intermetallic compound layer at an interface between the base substrate and the hard particle portion.

6. A sliding member for an internal combustion engine, comprising the sliding member according to claim 1 in a sliding portion of the internal combustion engine.

7. The sliding member according to claim 2 , wherein the steel portion and the hard particle portion are bonded to each other via a fourth intermetallic compound layer at an interface between the steel portion and the hard particle portion.

8. The sliding member according to claim 2 , wherein the copper portion and the hard particle portion are bonded to each other via a fourth intermetallic compound layer at an interface between the copper portion and the hard particle portion.

Assignees

• Nissan Motor
• Renault Sas

Inventors

• Izawa Yoshinori
• Mabuchi Yutaka
• Arai Junichi
• Grente Christian
• Bonay Elodie
• Specht Carolina
• Mahlaire Jean Marie

Classifications

• B22F7/008 Primary

  characterised by the composition · CPC title

• B22F1/12

  Metallic powder containing non-metallic particles (containing lubricating or binding agents or organic material B22F1/10) · CPC title

• F01L3/02

  Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials · CPC title

• C23C24/04

  Impact or kinetic deposition of particles · CPC title

• C22C38/56

  with more than 1.7% by weight of carbon · CPC title