METHOD OF PRODUCING HIGHLY POROUS CELLULAR MATERIAL Russian patent published in 2024 - IPC B22F3/11 C22C1/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of powder metallurgy, in particular to methods of strengthening workpieces intended for the manufacture of a highly porous permeable cellular material (HPCM) based on a heat-resistant alloy used in conditions of high temperatures and aggressive media as a filter, catalyst carrier, noise absorber, heat exchanger, structural material, cutting tool. Method involves preparation of a suspension from a mixture of powders of high-purity iron doped with chromium in amount of 5 to 20 wt.% and ground to average particle size of 2–5 mcm, and ultrafine cobalt powder in amount of 1.2–2.0 wt.%, and organic substance solution. Obtained suspension is deposited on a porous polymer material, the obtained workpiece is dried, organic substances are removed from it by heating and sintering is performed. Average particle size of the ultrafine cobalt powder ranges from 0.3 mcm inclusive to 0.4 mcm and from 0.4 mcm to 0.5 mcm inclusive.

EFFECT: wider range of quantitative characteristics of particle size of ultrafine cobalt powder.

1 cl, 1 ex