| 摘要 |
PROBLEM TO BE SOLVED: To provide porous intermetallic compounds or ceramics useful for a filter for cleaning waste gas, an impact absorption member, a heat insulating and sound absorbing material, biomaterial and the like. SOLUTION: This method for manufacturing the porous intermetallic compounds or ceramics comprises mixing different kinds of metal powders according to a composition in manufacturing the intermetallic compounds or the ceramics, forming them with combustion synthesis, and making them porous by means of generating bubbles of gas components absorbed or occluded in the metal powders, during the combustion synthesis. Pore size or porosity of the porous intermetallic compound or the ceramics is controlled by a mixing rate of a raw material powder, a compression ratio of the mixed powders, a heat quantity on preheating and the combustion synthesis, and an addition of exothermic or endothermic auxiliaries.
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