Abstract
The influence of technological parameters of a friction treatment (indenter material, coolant-cutting processing medium, friction load and friction coefficient) on the phase composition, surface roughness and microhardness of chromium-nickel PG- SR2 coating, produced by gas-powder laser cladding is studied. The efficiency of the coating surface hardening of the PG- SR2 coating by the indenters of boron nitride in the air and solid carbide in argon at a relatively high friction coefficient "indenter - coating" while ensuring a favorable stress state of the surface layer and high surface finish is determined. It is shown that the friction treatment promotes increase of coating surface durability during tests on fixed abrasive (flint) and on adhesive wear (in dry sliding friction).
Keywords: Laser cladding; Frictional treatment; Microhardness; Abrasive wear; Adhesive wear.
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