不同氧化钨氢还原制取超细钨粉

Ultrafine tungsten powder produced from different phase tungsten oxides by hydrogen reduction techniques

选取相成分单一的氢钨青铜 (HTB ,H0 .33WO3)、铵钨青铜 (ATB ,(NH4) 0 .5 WO3)、紫钨 (TVO ,WO2 .72 )、黄钨(TYO ,WO3)和相成分不单一的蓝钨 (TBO ,含WO2 .9和WO2 .72 两相 )作为原料 ,研究钨原料对制取超细钨粉的影响 .结果表明 :相成分单一的氧化钨通过氢还原能制取细而均匀的钨粉 ;紫钨WO2 .72 制得的钨粉细而均匀 ,分散性好 。

In this article five kinds of tungsten oxide materials of hydrogentungsten bronze (H 0.33 WO 3),ammonium tungsten bronze((NH 4) 0.5 WO 3),violent tungsten γ oxide (WO 2.72 ),tungstenyellow oxide(WO 3), mixtureof tungsten β oxideandtungsten γ oxide were selected to study the influence of raw materials on producing ultrafine and homogenous tungsten powder. Researching results show that ultrafine and homogenous tungsten powder can be produced from one phase tungsten oxide; and because of the special pore structure among WO 2.72 particles, the homogenous and ultrafine tungsten powder has loose structure which is more suitable for the ultrafine hard metals than the powders from the other TBO materials selected in this paper.[