FIELD: metallurgy.
SUBSTANCE: invention refers to wear-, erosion- and chemically resistant material on base of tungsten alloyed with carbon; also carbon in terms of total weight of material amounts from 0.01 wt % to 0.97 wt %. Material contains a matrix of tungsten with dispersed nano-particles of tungsten carbide of dimension not more, than 50 nm, mainly not more, than 10 nm. Material is produced by chemical sedimentation from gas phase onto a substrate. The substrate is arranged in the reactor of chemical sedimentation from the gas phase. The substrate is heated in a mixture of gases containing hexafluoride of tungsten, hydrogen, gas containing carbon, and, not necessary, inert gas. Also carbon containing gas is preliminary actuated by heating to temperature 500-850°C. Further, the substrate is cooled till there is formed a layer consisting of tungsten alloyed with carbon and fluorine.
EFFECT: high hardness and impact resistance.
37 cl, 10 dwg, 1 tbl, 9 ex
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Authors
Dates
2010-10-27—Published
2005-10-11—Filed