PROCESS OF PRODUCTION OF DISPERSIVE POWDER OF HYDROFORMING ALLOYS Russian patent published in 1998 - IPC

FIELD: production of dispersive powders with specified characteristics. SUBSTANCE: hydroforming alloy is vacuum processing, then processes of hydrogenation under increased pressure and dehydrogenation under decreased pressure of hydrogen and heating alternate. Novelty of invention lies in hydrogenation of alloys of composition RT₅ chosen from group meeting condition eV, where W_av is average electronic work function of alloy; n is number of atoms in alloy RT₅; W_i is electronic work function of components of alloy; R is rare-earth metal or mixture of rare-earth metals; T is transition metal, aluminum or their mixture. Compaction by pressing in presence of polyethylene or polypropylene under pressure up to 20.0 MPa or deposition of copper coat on surface of powder by chemical method with use of boron hydrides of light metals and subsequent pressing are possible after dehydration. EFFECT: process is simple, adaptable to production, does not require large volume of preliminary experimental investigations which results in improved economical and technological indices of process.