Granted Patent B2

US 12,680,575 · App. 18/842,545 · Granted Jul 14, 2026

Inventors: Kohei Susumu (Tokyo, JP); Masahito Fujita (Tokyo, JP); Tomomitsu Watanabe (Tokyo, JP)

Assignee: SANKYO OILLESS INDUSTRY, INC.

F16C33/121C22C9/04

Abstract

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.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (9)