Abstract
The process of formation of free graphite in the surface layer of specimens from alloys based on iron and titanium by the method of electric spark alloying is described. It is established that a high content of free graphite in the surface layer can be obtained only by feeding it in a powder form (together with the modifying materials) into the zone of electric spark treatment. The wear resistance of the thus graphitized surface layers of steel and titanium alloy specimens increases by a factor of 7–8.
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