W powder is produced by: preparing a precursor containing tungsten; producing gas by vaporizing or sublimating the precursor; separating the tungsten component by placing the gas in an inert atmosphere while maintaining pressure below atmospheric pressure; and condensing the tungsten
Ultra fine TaC-transition metal based complex powder is prepared by: dispersing a mixture of a Ta-containing material and a transition metal-containing water soluble salt into a solvent; stirring the mixture and spray-drying the stirred material to obtain precursor powder; calcining
