Patent ID: 6358345
Filing Date: 2002-03-19
Classification: B01J,B22D,B22F,C22C

Abstract:
A method for producing a porous metallic structure, comprising the following steps:a) selecting blanks, b) processing said blanks through organic medium dipping, c) processing said blanks through accumulation so as to form an embryo, d) baking said embryo to form a shaped embryo comprising a plurality of blanks and gaps therebetween, e) selecting an alloy, f) selecting a refractory mortar, h) dipping said shaped embryo in said refractory mortar under vacuum, i) drying said shaped embryo and said refractory mortar so that said refractory mortar forms a hardened refractory exterior layer on said shaped embryo, j) sintering said shaped embryo, k) preheating said alloy and said shaped embryo, and l) casting said shaped embryo with said alloy in a vacuum, such that molten alloy fills said gaps in said shaped embryo; wherein said refractory mortar is selected according to melting point characteristics of said alloy, and said blanks are granular organic materials, said granular organic materials are chosen according to desired shapes, sizes, and density of said pores and communicating areas between adjacent pores, such that shapes, sizes, and density of pores of said porous metallic article are controlled.