Method for imparting erosion-resistance to metallic substrate

Details Method for imparting erosion-resistance to metallic substrate Method for imparting erosion-resistance to metallic substrate

1988-04-11

1990-06-05

Nguyen, Nam X.

Chemistry: electrical and wave energy

Processes and products

20419215, 20419231, 427250, 4272557, 427405, 4274431, C25D 500, C23C 1434, C23C 1600, B05D 118

Patent

active

049311522

ABSTRACT:
Erosion resistance is imparted to a metallic substrate without an attendant loss of fatigue life in the substrate by applying to the substrate a first layer comprising palladium, platinum or nickel in direct contact with the substrate and then applying a second layer which overcoats the first layer, the second layer being comprises of a tungsten-carbon alloy or a material formed of a tungsten matrix having dispersed tungsten-carbon compound phases therein. In another embodiment erosion resistance is imparted by employing a coating which comprises a first ductile layer on the substrate of palladium, platinum or nickel; a second layer comprising substantially pure tungsten; and a third layer comprising a material formed of a tungsten-carbon alloy or a material formed of a tungsten matrix having dispersed tungsten-carbon compound phases.

REFERENCES:
patent: 3774703 (1973-11-01), Sanderson
patent: 3802078 (1974-04-01), Denes
patent: 3829969 (1974-08-01), Fischbein et al.
patent: 3869368 (1975-04-01), Beardmare et al.
patent: 3911579 (1975-10-01), Lane et al.
patent: 4076888 (1978-02-01), Perugini et al.
patent: 4525417 (1985-06-01), Dimigen et al.
patent: 4619865 (1986-10-01), Keem et al.

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