METHOD FOR PRODUCING FINELY DISPERSED TITANIUM POWDER Russian patent published in 2007 - IPC B22F9/16 

FIELD: powder metallurgy, namely production of finely dispersed titanium powder.

SUBSTANCE: method comprises steps of hydrogenating initial titanium; disintegrating titanium hydride; heat decomposition of titanium hydride in vacuum and disintegration of formed cake. Heat decomposition is performed by several stages while realizing additional disintegration of cake between said stages. Before hydrogenating initial titanium, subjecting it to thermal activation at temperature 400 - 650°C. Hydrogenation is realized till providing content of hydrogen 440 - 468 cm³ per 1 g of titanium. Titanium hydride is disintegrated till achieving specific surface at least by 2 times exceeding that of produced titanium powder. Heat decomposition of titanium hydride is realized at least by two stages. Additional disintegration of cake is realized at residual content of hydrogen in range 100 - 380 cm³ per 1 g of titanium. According to invention residual content of hydrogen in powder is no more than 4 cm³ per 1 g of titanium. Yield of ready product consists at least of 94% of initial titanium mass; size fraction of titanium powder particles is less than 40 micrometers; specific surface measured according to standard method is in range 0.8 - 1.5 m²/g.

EFFECT: improved quality parameters of fine titanium powder.

2 cl, 1 ex