WEAR AND CORROSION RESISTANCE OF Ni-P COATING ON AA7075 ALUMINUM ALLOY
- 1 Engineering Faculty, Department of Mechanical and Manufacturing Engineering, Bilecik S.E. University, Bilecik, Turkey
- 2 Central Research Laboratory, Bilecik S.E. University, Bilecik, Turkey
Abstract
This study was initiated to compare the wear and corrosion performances of an AA7075 quality aluminum alloy after electroless Ni-P process. The characterization of the coating was made by microscopic examinations, thickness, surface roughness and hardness measurements. Wear and corrosion performances of the uncoated and coated samples were investigated by using a reciprocating wear tester and a Potentiodynamic Polarization Scanning (PDS) technique, respectively. Formation of Ni–P layer on AA7075 aluminum alloy accompanied not only by remarkable increase in the surface hardness, but also caused significant improvement in wear and corrosion resistances.