HIGH HARDNESS METALLIC TOOL, COBALT BINDER METALLIC ALLOY FOR HIGH HARDNESS ALLOY PARTICULARLY USED FOR CUTTING TOOL AND HIGH HARDNESS METALLIC TOOL CONTAINING THE ABOVE ALLOY

摘要

PROBLEM TO BE SOLVED: To improve the corrosion resistance and total service life of a sintered carbide material for cutting a layer contg. the powder of metal or metallic oxide of a magnetic recording medium in particular. ;SOLUTION: To 100 pts.wt. cobalt, the ratio of an alloy and a binder metallic alloy contg. about 1 to 10 pts.wt. aluminum is regulated to about 2 to 12 pts.wt. to 100 pts.wt. tungsten carbide, and this binder metallic alloy contains cobalt and aluminum by about 1 to 10 pts.wt. to 100 pts.wt. cobalt.;COPYRIGHT: (C)1997,JPO