POROUS CERAMIC FOR SLIDING MEMBERS, METHOD FOR PRODUCING THE SAME AND MECHANICAL SEAL RING

Title:

POROUS CERAMIC FOR SLIDING MEMBERS, METHOD FOR PRODUCING THE SAME AND MECHANICAL SEAL RING

Document Type and Number:

WIPO Patent Application WO/2006/117897

Kind Code:

A1

Abstract:

A porous ceramic for sliding members having independent pores of pore size not smaller than 5 μm. The pores are compressed flatly in the direction perpendicular to the sliding surface. The cross-directional area (S1) of each pore in the direction is 95% or less of the area (S2) when the cross-section of the pore is a true circle. The ratio (P75/P25) of the cumulative 75 vol% pore size (P75) to the cumulative 25 vol% pore size (P25) is 1.9 or less in the cumulative distribution curve of pore size of the independent pores in a plane parallel to the sliding surface. This porous ceramic can be suitably utilized for a sliding member such as a seal ring.

Inventors:

HARA TAKESHI (JP)
MASUYAMA SHINICHIROU (JP)

Application Number:

PCT/JP2005/023593

Publication Date:

November 09, 2006

Filing Date:

December 22, 2005

Export Citation:

Click for automatic bibliography generation Help

Assignee:

KYOCERA CORP (JP)
HARA TAKESHI (JP)
MASUYAMA SHINICHIROU (JP)

International Classes:

C04B38/00; C04B38/06; F16J15/34

Foreign References:

JP2005179100A	2005-07-07
JP2005015246A	2005-01-20
JP2002147617A	2002-05-22
JP2002274953A	2002-09-25
JPS6071617A	1985-04-23
JPH01210406A	1989-08-24
JPH02256971A	1990-10-17
JPH0255273A	1990-02-23
JPH0569066B2	1993-09-30
US5395807A	1995-03-07
JP3481774B2	2003-12-22

Other References: