Sliding member, and sliding member for internal combustion engine

Patent metadata

Field	Value
Publication number	US-2020011211-A1
Application number	US-201816483006-A
Country	US
Kind code	A1
Filing date	Feb 2, 2018
Priority date	Feb 3, 2017
Publication date	Jan 9, 2020
Grant date	—

Abstract

A sliding member includes a base substrate and a coating layer formed on the base substrate. The coating layer includes a copper alloy part derived from a plurality of precipitation hardening copper alloy particles. The copper alloy parts are bonded to each other via interfaces between the copper alloy parts. The copper alloy part contains nickel and silicon as additive elements. The copper alloy part contains 2 to 5 percent by mass of nickel.
A sliding member for an internal combustion engine includes the sliding member at a sliding part of the internal combustion engine.

First claim

1 - 8 . (canceled)

9 . A sliding member, comprising:
a base substrate; and a coating layer formed on the base substrate; wherein the coating layer includes copper alloy portions derived from precipitation hardening copper alloy particles, the copper alloy portions are bonded to each other via interfaces between the copper alloy portions, the copper alloy portions contain nickel and silicon as additive elements, and the copper alloy portions contain 2 to 5 percent by mass of nickel.

10 . The sliding member according to claim 9 , wherein at least one of the copper alloy portions contains at least one precipitation phase including nickel silicide inside and/or in an interface of the copper alloy portions.

11 . The sliding member according to claim 9 , wherein at least one of the base substrate and the coating layer comprises at least one plastically deformed portion.

12 . The sliding member according to claim 9 , wherein a porosity in a cross section of the coating layer is 3 area % or less.

13 . The sliding member according to claim 9 , comprising at least one intermediate layer including at least one of a diffusion layer and an intermetallic compound layer, the at least one intermediate layer being formed at least in a part of a gap between the base substrate and the coating layer.

14 . The sliding member according to claim 9 , wherein the coating layer includes a hard particle portions derived from hard particles, the hard particle portions being harder than the copper alloy portions.

15 . The sliding member according to claim 14 , wherein the hard particle portions comprise 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, and ceramic particles.

16 . A sliding member for an internal combustion engine, comprising a sliding member at a sliding part of an internal combustion engine,
the sliding member comprising: a base substrate; and a coating layer formed on the base substrate; wherein the coating layer includes copper alloy portions derived from precipitation hardening copper alloy particles, the copper alloy portions are bonded to each other via interfaces between the copper alloy portions, the copper alloy portions contain nickel and silicon as additive elements, and the copper alloy portions contain 2 to 5 percent by mass of nickel.

Assignees

• Nissan Motor
• Fukuda Metal Foil & Powder Co Ltd

Inventors

• Izawa Yoshinori
• Arai Junichi
• Otobe Katsunori
• Nishimura Shinichi

Classifications

• F16J1/02

  Bearing surfaces · CPC title

• F16C33/122 Primary

  Multilayer structures of sleeves, washers or liners · CPC title

• F16C2204/10

  Alloys based on copper · CPC title

• C22C9/06

  with nickel or cobalt as the next major constituent · CPC title

• C23C24/04

  Impact or kinetic deposition of particles · CPC title