Preparation Method for Rare Earth Oxide Doped Tungsten Powder

The present invention provides a method for producing a rare earth-doped tungsten oxide powder, a refractory metal belonging to the technical field of rare earth materials.

Process: First, low-temperature combustion synthesis method using rare earth oxides (Sc2O3, Y2O3, La2O3, CeO2, ZrO2, Gd2O3 and Eu2O3 one or several) and tungsten oxide precursor powder uniformly mixed, and then the precursor powder was calcined in a muffle furnace, and finally the two-step reduction in a hydrogen or cracked ammonia atmosphere. Easily reducible tungsten oxide is reduced to tungsten powder, but can not restore rare earth oxide particles retained, resulting in rare earth oxide doped tungsten powder. Oxides of rare earth doped rare earth oxide content of the tungsten powder is 0.05 ~ 35wt%;.

Advantages of the present invention is that the target element, and an organic carbon source to form a highly dispersed system of fine and uniform particle size of the resulting oxide. Due to the low cost of raw materials, reaction speed, low power consumption, simple process, and therefore more suitable for industrial production.




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