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 (FeCl_2cdot4H_2O), nickel(II) chloride hexahydrate (NiCl_2cdot6H_2O) as source materials and the sodium tungstate dihydrate (NaWO_4cdot2H_2O) 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.

• Keywords: Tungsten;Alloys;Composite;Powder;Chemical synthesis;