IP Library › Granted Patent US 12680575
Granted Patent B2
US 12680575 · App. 18/842,545 · Granted Jul 14, 2026

Sliding material

Inventors: Kohei Susumu (Tokyo, JP); Masahito Fujita (Tokyo, JP); Tomomitsu Watanabe (Tokyo, JP)
Assignee: SANKYO OILLESS INDUSTRY, INC.
F16C33/121C22C9/04
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Quick Facts
Patent No.
US 12680575
App. No.
18/842,545
Granted
Jul 14, 2026
Kind
B2
Abstract

A sliding material having improved slidability is provided. A sliding material, comprising a substrate comprising brass alloy and a Cr—Fe—Si-based intermetallic compound comprised in the substrate, wherein the nanoindentation hardness of regions wherein the Cr—Fe—Si-based intermetallic compound precipitated is 20 GPa or more and 28 GPa or less.

Claims (11)

1 . A sliding material, comprising:

a substrate comprising brass alloy and

a Cr—Fe—Si-based intermetallic compound comprised in the substrate,

wherein the Cr—Fe—Si-based intermetallic compound has a nanoindentation hardness of 20 GPa or more and 28 GPa or less measured in accordance with ISO 14577-1.

2 . The sliding material according to claim 1 , wherein the Cr—Fe—Si-based intermetallic compound has a spatial structure in which the Cr—Fe—Si-based intermetallic compounds are connected.

3 . The sliding material according to claim 1 , wherein the Cr—Fe—Si-based intermetallic compound has a rounded shape composed of curved surfaces.

4 . The sliding material according to claim 1 , wherein the Cr—Fe—Si-based intermetallic compound has a chemical structure of (Cr,Fe)3Si.

5 . The sliding material according to claim 2 , wherein the Cr—Fe—Si-based intermetallic compound has a shape that is roundish and composed of curved surfaces.

6 . The sliding material according to claim 2 , wherein the Cr—Fe—Si-based intermetallic compound has a chemical structure of (Cr,Fe)3Si.

7 . The sliding material according to claim 3 , wherein the Cr—Fe—Si-based intermetallic compound has a chemical structure of (Cr,Fe)3Si.

8 . The sliding material according to claim 5 , wherein the Cr—Fe—Si-based intermetallic compound has a chemical structure of (Cr,Fe)3Si.