Electroless Ni-P coatings have been widely used due to their good combination of properties such as hardness, wear resistance and corrosion resistance. The addition of dispersed hard micro-particles into the Ni-P matrix has led to the development of composite coatings. Ni-P composite coatings exhibit an improved hardness and wear resistance properties; however, there is still a disagreement among researches on the corrosion behavior of composite Ni-P coatings. The present investigation involves the synthesis, characterization and a comparative study of the corrosion resistance in NaCl 3,5% of electroless Ni-P and Ni-P-SiC deposits obtained by either prepared or commercial electrolytic nickel/hypophosphite based baths. The characterization of deposits involved studies about morphology by SEM, chemical composition by energy-dispersive X-ray spectroscopy (EDX) and glow discharge optical emi...

Electroless Ni-P coatings have been widely used due to their good combination of properties such as hardness, wear resistance and corrosion resistance. The addition of dispersed hard micro-particles into the Ni-P matrix has led to the development of composite coatings. Ni-P composite coatings exhibit an improved hardness and wear resistance properties; however, there is still a disagreement among researches on the corrosion behavior of composite Ni-P coatings. The present investigation involves the synthesis, characterization and a comparative study of the corrosion resistance in NaCl 3,5% of electroless Ni-P and Ni-P-SiC deposits obtained by either prepared or commercial electrolytic nickel/hypophosphite based baths. The characterization of deposits involved studies about morphology by SEM, chemical composition by energy-dispersive X-ray spectroscopy (EDX) and glow discharge optical emi...