METHOD FOR OBTAINING VOLUMETRIC AND POROUS STRUCTURES OF HYDROGEN BEARING ALLOYS CAPABLE OF SUSTAINING MULTIPLE HYDRATION-DEHYDRATION CYCLES WITHOUT DESTRUCTION Russian patent published in 2014 - IPC B22F3/11 C22C1/08 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, and namely to obtaining volumetric and porous structures of hydrogen bearing alloys (HBA) capable of sustaining multiple hydration/dehydration cycles without any destruction. Nanocrystalline powder of an intermetallic compound is obtained by means of a mechanical activation method by treatment of powders of individual components in a ball planetary activator or by mechanical activation processing of alloy powder based on the intermetallic compound at background temperature of the reactor of 100-500°C. Powder of the intermetallic compound is pressed into volumetric specimens at the pressure of at least 500 MPa. HBA volumetric specimens are annealed in deep vacuum of below 10^-3-10^-4 Pa at the temperature of 0.3-0.5 of fusion temperature of the intermetallic compound.

EFFECT: providing preservation of a phase composition and a nanostructural state, a level of hydrogen sorption properties; simplifying an activation procedure of interaction with hydrogen and improving temperature conductivity of material.

7 dwg, 2 tbl, 2 ex