Abstract
A novel chemical method was evaluated to fabricate the ultrafine tungsten heavy alloy powders with bater-base solution made from the ammonium metatungstate (AMT), iron(II) chloride tetrahydrate (<TEX>$FeCl_2{\cdot}4H_2O$</TEX>), nickel(II) chloride hexahydrate (<TEX>$NiCl_2{\cdot}6H_2O$</TEX>) as source materials and the sodium tungstate dihydrate (<TEX>$NaWO_4{\cdot}2H_2O$</TEX>) as Cl-reductant. In the preparation of mixtures the amounts of the source components were chosen so as to obtain alloy of 93W-5Ni-2Fe composition(wt.%). The obtained powders were characterized by X-ray diffraction, XRF, field-emission scanning microscope (FESEM), and chemical composition was analyzed by EDX.
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