Vane material and process for preparing same

Details Vane material and process for preparing same Vane material and process for preparing same

1994-06-10

1998-05-19

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 13, 419 14, 419 16, 419 17, 419 18, 419 38, 75236, 75238, 75239, 75241, 75242, 75244, 75246, B22F 312, B22F 504, C22B 3302, C22C 3800

Patent

active

057549354

ABSTRACT:
The present invention provides a vane material having an excellent scuffing resistance in a compressor employing an alternative Freon gas as a cooling medium and a process for the preparation thereof. In accordance with the present invention, a vane material is provided having a structure comprising a base material consisting essentially of 1.0 to 4.5% by weight of carbon, not more than 1.5% by weight of silicon, not more than 1.0% by weight of manganese, 3 to 6% by weight of chromium, not more than 30% of tungsten and/or not more than 20% by weight of molybdenum provided that (W+2Mo) is not more than 45% by weight, 2 to 10% by weight of vanadium and/or niobium, not more than 20% by weight of cobalt, and a balance of iron and inavoidable impurities with additive particles of a carbide and additive particles of a nitride and/or a carbonitride, sintered thereto in an amount of more than 0% to not more than 25% by weight and 2 to 25% by weight based on the total weight of the vane material, respectively. The vane material according to the present invention can be obtained by sintering the mixture of the base powder with the particulate carbide and nitride or carbonitride powders.

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patent: 5145585 (1992-09-01), Saito et al.
patent: 5462901 (1995-10-01), Egami et al.
patent: 5466276 (1995-11-01), Sato et al.

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