Patent · US Active

Sliding part made of Pb-free Cu-Bi based sintered alloy

US8993493B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

TAIHO KOGYO Co., Ltd. · JP

Inventors

Ryo Mukai · Ebeye, US
Hiromi Yokota · Ebeye, US
Kao Mouri · Toyota, JP

Key dates

Filing date	Sep 9, 2009
Grant date	Mar 31, 2015
Priority date	—
Expiry date	Jul 31, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/86
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Sliding parts are made of Pb-free Cu—Bi based sintered material. The side in contact with a shaft is machined to a predetermined roughness. A number of Bi phases are present on the finished surface. Stable performance of Bi is to be exhibited. Machined sintered material covers a portion of the Bi phases. The ratio of the exposed surface area of the Bi phases is 0.5% or more relative to the area of the finished surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.