| 摘要 |
PROBLEM TO BE SOLVED: To provide a hard alloy which has a long life, suppresses unexpected breakage and provides a tool reduced in variation of performance between products and a method of producing a hard alloy.SOLUTION: A hard alloy includes hard-phase particles based on tungsten carbide and a bond-phase metal which is based on an iron-group metal and bonds the hard-phase particles together and is processed by ion beam processing. When a total of 10-60 observation visual fields, with a total visual field area of 30,000 μmor greater, are set in three or more parts in an arbitrary cross section of the hard alloy and a number of pores of equivalent circle diameters of smaller than 1 μm is measured, the number of such pores is 0.02 pore/μmor smaller. |
