Abstract

The nano-composite coating of Ni–P/Ag was obtained by adding silver nanoparticles to the Ni–P electroless plating solutions. The properties of the coating were tested by scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), differential scanning calorimeter (DSC), X-ray diffraction (XRD) and microsclerometer. Silver nanoparticles changed the properties of the composite coating. The Ni–P electroless coating contains 12.23 wt.% P while the composite coating of Ni–P/Ag contains 11.17 wt.% P and 0.24 wt.% Ag. The hardness of the composite coating is bigger than that of Ni–P alloy coating. Differential scanning calorimeter studies showed the amorphous to crystalline transition with precipitation of Ni 3P and Ni around 335 °C.

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