METHOD OF PRODUCING POWDER OF NONSTOICHIOMETRIC TITANIUM HYDRIDE WITH PRESET HYDROGEN CONTENT Russian patent published in 2011 - IPC B22F9/16 

FIELD: process engineering.

SUBSTANCE: invention relates to powder metallurgy. Proposed method consists in hydrating initial titanium, grinding produced hydride and partial thermal decomposition of titanium hydride. Prior to hydrating initial titanium, it is subjected to vacuum thermal annealing at 400 to 650°C, while hydration is performed to hydrogen content of 436 to 445 cm³ per 1 g of titanium hydride. Grinding of titanium hydride is performed to specific surface of, at least, one and a half time higher than that of produced powder of nonstoichiometric titanium hydride. Thermal decomposition of titanium hydride powder is performed at 400 to 700°C, while released hydrogen is removed from retort into calibrated vessel at the rate of 1.2×10^-3 to 3.5×10^-3 l/min with 1 g of titanium hydride. Thermal decomposition of titanium hydride is terminated after removing such hydrogen volume from retort that remained hydrogen forms nonstoichiometric titanium hydride of preset atomic ratio.

EFFECT: nonstoichiometric titanium hydride powder with preset parametres.

2 cl, 3 ex