The effect of SiC additives on fretting wear of electroplated NiP coatings

The present work studies the effect of reinforcing additives of submicron-size silicon carbide and thermal treatment on fretting wear of nickel-phosphorus (NiP) electroplated coatings. The tests are conducted under a 500-μm shear of the friction contact. The tribotests show that all coatings under study undergo abrasive-oxidative wear. Thermal treatment is found to reduce the friction coefficient and wear rate of the coatings under fretting, whereas the increased content of the SiC additive leads to increased friction coefficient and wear rate. The annealed NiP coatings have a lower wear rate compared to the composite NiP-SiC coatings.