| 摘要 |
PURPOSE:To obtain a W-alloy with high specific gravity having the same quality as one prepared according to a doping process, by a method wherein a W-powder and two kinds or more of metal powders selected from Ni, Fe, Co and Cu are accommodated in a dry forcedly stirring crusher to be ground and mixed under an inert gas atmosphere by specific spheres as ginding mediums and the resulting mixture is molded and annealed. CONSTITUTION:A W-powder and two kinds or more of metal powders selected from Ni, Fe, Co and Cu are accommodated in a dry forcedly stirring crusher and ground and mixed by spheres of which tap densities are 15 times or more as compared to that of the resulting mixed powder and diameters are 8mm. or less as grinding mediums under an inert gas atmosphere. The obtained mixture is cooled in an inert gas atmosphere and molded and sintered to obtain a W-alloy. |
