Super heatresistant cermet and process of producing the same

Details Super heatresistant cermet and process of producing the same Super heatresistant cermet and process of producing the same

1984-01-12

1986-05-06

Lieberman, Allan M.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 14, 419 15, 419 16, 75235, 75238, 75248, 428551, 428552, C22C 2904, C22C 2912, B22F 316, B22F 324

Patent

active

045870950

ABSTRACT:
A super heatresistant cermet and process of producing the same. A mixture, which contains about 10 to about 65% by weight of a powder of the carbonitride having titanium and tungsten, about 0.5 to about 10.0% by weight of a magnesium oxide powder and a tungsten powder, is pressed to form a compact, which is thereafter sintered in a vacuum or in an atmosphere of a nitrogen gas or an inert gas within the temperature range of about 1800.degree. to 2700.degree. C. to thereby decarburize the carbonitride with the magnesium oxide evaporated during the sintering, whereby there is produced a super heatresistant cermet containing about 10 to about 65% by weight of a carbonitride containing titanium and tungsten, about 0.01 to about 1.0% by weight of magnesium oxide, and tungsten as a binder. The super heatresistant cermet is excellent in impact resistance, wear resistance and plastic deformation resistance, and suitable for cutting tools.

REFERENCES:
patent: 4447263 (1984-05-01), Sugizawa et al.

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