Porous sintered metal and filter thereof, and method for producing porous sintered metal
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United States of America Patent
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Mar 27, 2007
Grant Date -
Sep 1, 2005
app pub date -
Apr 13, 2005
filing date -
Jul 15, 2002
priority date (Note) -
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Abstract
A porous sintered metal comprising voids at least partially communicating with each other, and pores provided in walls of the voids, the porous sintered metal having a BET surface area of 700 cm.sup.2/cm.sup.3 or more, and an average diameter of the pores being 1 .mu.m or more when measured by a mercury press-in method. The porous sintered metal is produced by blending a metal powder, a binder and resin particles to prepare a mixture in which the resin particles are dispersed; molding the mixture to provide a green body; selectively extracting the resin particles from the green body with a solvent; debinding the extracted green body by heating; and sintering the debound green body.
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