Effect of Cu addition on the microstructure and tribological performance of Ni60 directional structure coating

Abstract

The Ni60/15wt% Cu directional structure coating was prepared by the composite technology of flame spraying, induction remelting, and forced cooling, and the effect of Cu on the microstructure, phase, hardness, and wear performance of Ni60 coatings was investigated. Results showed that Cu addition makes the microstructure of Ni60 directional structure coating more compact, and Cu is mainly enriched within the crystal grain, resulting in the formation of Cu_3.8Ni as the bonding phase. Compared with Ni60 directional structure coating, Ni60/Cu directional structure coating has a lower hardness, lower friction coefficient, and lower wear rate, which indicate that Cu can effectively enhance the antifriction performance of Ni60 directional structure coating.

Keywords

induction remelting / directional structure coating / microstructure / tribological performance

References

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