Patent ID: 6592787
Filing Date: 2003-07-15
Classification: C04B,Y10T

Abstract:
A method for forming a porous article comprising the steps of:preparing a mixture of particles and hollow pliable resilient organic polymer spheres in a liquid; said particles made from metal; said metal particles are made from a metal selected from the group consisting of steel and steel alloys, stainless steel, copper, brass, bronze, aluminum, aluminum alloys, titanium, chromium, nickel, and FeCrALY; said spheres having average diameters between 1 micron and 1000 microns; forming the mixture into a shaped article; drying the shaped article; firing the shaped article, wherein the particles are bonded and the hollow pliable organic polymer spheres are eliminated, resulting in voids having average diameters between 1 micron and 1000 microns in the shaped article; whereby a substantial number of voids form intersections with at least one adjacent void and circular windows are formed at the intersections.