METHOD OF PRODUCTION OF ALLOYS-ACCUMULATORS OF HYDROGEN BASED ON CHEMICALLY ACTIVE TRANSITION METALS Russian patent published in 1997 - IPC

FIELD: methods of production of hydrogen-accumulating alloys based on chemically active transition metals including melting in vacuum induction furnaces in crucibles from calcium oxide and casting. SUBSTANCE: prior to melting, crucible is made from powder of calcium oxide on template from armco iron, firing in the air with template heated to temperature close to iron melting point, conductance of the first fixing melting in vacuum with melting of template and washing of hot crucible with melt based on metals of melt alloy. Alloys are melt in atmosphere of inert gases by melting charge with successive filling of crucible in course of melting with components depending on their melting temperature and vapor pressure, and prior to casting, rare-earth metal is introduced into melt. Washing of crucible is carried out with titanium-manganese alloy. Rare-earth metal is introduced in the amount of 0.5-1.0% of melt mass. EFFECT: higher efficiency. 3 cl, 1 tbl