WEIGHT MADE OF HIGH SPECIFIC GRAVITY HIGH STRENGTH TUNGSTEN SINTERED ALLOY

摘要

PROBLEM TO BE SOLVED: To further miniaturize a weight by increasing the specific gravity of a sintered alloy.;SOLUTION: The weight is formed of a sintered alloy having a composition containing, as bonding phase forming components, by weight, 0.05 to 2.5% Ni and 0.05 to 1% Co so as to control their total content to ≤3%, and the balance granular W as a dispersion phase forming component with inevitable impurities, and having a specific gravity of 18.5 to 19.2.;COPYRIGHT: (C)2003,JPO