As the high specific gravity high intensity tungsten basic sintering alloy

摘要

PROBLEM TO BE SOLVED: To further miniaturize a weight by increasing the specific gravity.;SOLUTION: This weight is composed of a W-base sintered alloy which has a composition comprising Ni and Cu as a component for forming a bonding phase, in a range of 0.1 wt.% or more for each but 3 wt.% or less for their total amount, so as to make a ratio of Ni to Cu be (2:1)-(6:1), and the balance W as a component for forming a dispersed phase, with unavoidable impurities, and which has specific gravity adjusted to 18.5-19.2.;COPYRIGHT: (C)2003,JPO