Electrodeposition and characterization of NiCoP

The influence of the mass transfer effects, the applied current density, the solution pH and temperature, and bath composition on the current efficiency of the deposit was determined. Cyclic voltammetry on the deposition bath was conducted to understand the mechanism of deposition. The films were characterized by x-ray diffraction spectroscopy and were found to be generally amorphous with small amounts of crystalline phases dispersed depending upon the phosphorous content. The corrosion resistance of the deposits in a chloride medium was observed to increase with the phosphorous content. The knoop hardness of the electrodeposits was studied as a function of the phosphorous content as well.