Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1978-12-28
1981-07-21
Hunt, Brooks H.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75237, 75238, 75203, 75204, 75205, 75206, C22C 2900
Patent
active
042796512
ABSTRACT:
The invention relates to a sintered hard metal having a high wear resistance and heat resistance as material for cutting tools and wear resistant tools and the method for producing the same. The sintered hard metal has a hard phase comprising a phase having a B-1 type crystal structure containing more than one kind of IVa, Va and VIa group metals in the Periodic Table and also the elements, carbon, nitrogen and oxygen and a WC phase, the hard phase and a bonding phase chiefly consisting of a ferrous metal which is sintered by a powder metallurgy technique, whereas the oxygen in particular is added thereto making it possible to obtain a sintered hard metal having said excellent properties.
REFERENCES:
patent: 3703368 (1972-11-01), Rudy
patent: 3708355 (1973-01-01), Rudy
patent: 4049876 (1977-09-01), Yamamoto et al.
Rudy "Journal of Less Common Metals" vol. 33, #1, 1973, pp. 43-70.
Asai Tsuyoshi
Fujimori Naoji
Miyake Masaya
Tobioka Masa-aki
Yamamoto Takaharu
Hunt Brooks H.
Sumitomo Electric Industries Ltd.
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