SLIDING MEMBER AND PRODUCTION THEREOF - SUMITOMO ELECTRIC INDUSTRIES

Title:

SLIDING MEMBER AND PRODUCTION THEREOF

Document Type and Number:

WIPO Patent Application WO/1993/020023

Kind Code:

A1

Abstract:

A ceramic sliding member provided with a sliding face having a surface roughness of 1.0 $g(m)m or less in terms of arithmetical mean deviation (Ra). The ceramic includes silicon nitride sinter which contains crystal grains in a linear density of 35 or above per unit length of 30 $g(m)m, has a volumetric grain boundary ratio of 15 vol.% or less, and contains pores with a maximum diameter of 20 $g(m)m or less in a content of 3 % or less. The production process comprises machining a sliding face and then heating the ceramic in an atmosphere of either an inert gas or air to secure the smoothness of the sliding face. The obtained member has an excellent wear resistance and can be used under severe sliding conditions including high-speed sliding. It can inhibit the occurrence of seizure or abnormal wear on the sliding face even when applied to a sliding part of a compressor using chlorine-free fluorocarbon as the refrigerant.

Inventors:

KATAYAMA TETSUYA (JP)
MURABE KAORU (JP)
KOMURA OSAMU (JP)
KAWAI CHIHIRO (JP)
YAMAKAWA AKIRA (JP)

Application Number:

PCT/JP1993/000385

Publication Date:

October 14, 1993

Filing Date:

March 29, 1993

Export Citation:

Click for automatic bibliography generation Help

Assignee:

SUMITOMO ELECTRIC INDUSTRIES (JP)
KATAYAMA TETSUYA (JP)
MURABE KAORU (JP)
KOMURA OSAMU (JP)
KAWAI CHIHIRO (JP)
YAMAKAWA AKIRA (JP)

International Classes:

C04B35/01; C04B35/584; C04B35/593; C04B41/00; C04B41/80; F16C33/04; F16C33/16; (IPC1-7): C04B35/00

Foreign References:

JPH02150504A	1990-06-08
JPH01320255A	1989-12-26
JPS63206359A	1988-08-25
JPS6191067A	1986-05-09
JPH02204365A	1990-08-14

Other References: