FIELD: metallurgy.
SUBSTANCE: invention concerns methods of strengthening and modification of surface and can be used for endurance increasing of details made from titanium alloys, operating in corrosion-active mediums with presence of abrasive particle and high speeds of aggressive solution stream. It is implemented electrospark alloy addition of surface layer and following oxidation or nitriding. Electrospark alloy addition is implemented by nitride-forming elements or alloys on it basis. Then it is implemented thermal oxidation in oxidising air quality at the temperature 600-800°C during 2-16 hours or diffusive nitriding, which is implemented in catalystically prepared gas ammoniac environment at the temperature 500-680°C during 15-40 hours. In the capacity of nitride-forming alloys there are used ligature VCMA.
EFFECT: increasing of resistance against corrosion-erosion effect of corrosive mediums for products made of titanium alloys.
2 cl, 1 tbl, 1 ex
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