Synergy between corrosion and wear of electrodeposited Ni–P coating in NaCl solution

• Published in: Tribology international Vol. 44; no. 12; pp. 1603 - 1609
• Main Authors: Lee, H.B., Wuu, D.S., Lee, C.Y., Lin, C.S.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2011; Elsevier
• Subjects: Applied sciences; Blocking; Coating; Coefficient of friction; Contact of materials. Friction. Wear; Corrosion; Corrosive wear; Exact sciences and technology; Friction, wear, lubrication; Machine components; Mechanical engineering. Machine design; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metals. Metallurgy; Nickel; Ni–P coating; Polarization; Tribocorrosion; Tribology; Wear; Weight loss; Coefficient of friction; Tribocorrosion; Ni–P coating; Weight loss; Metal coating; Corrosive wear; Wear test; Friction coefficient; Electrodeposition; Sodium chloride; Tribology; Ni-P coating
• ISSN: 0301-679X; 1879-2464
• DOI: 10.1016/j.triboint.2011.04.011

An immersion block-on-ring tester was employed in this study to investigate the interaction between wear and corrosion of electroplated Ni–P coating in 5% NaCl solution. The weight loss and the coefficient of friction of the specimen under different bath temperatures and overpotentials were measured. The results showed that at temperature of 50 °C and overpotential of +600 mV SCE, which was within the transpassive region of its polarization curve, a severe synergy between corrosion and wear was observed. However, at lower temperatures and overpotentials, the interaction between wear and corrosion was hardly noticed. ► Synergistic wear and corrosion of Ni-P electrodeposits in 5% NaCl solution were studied. ► Overpotential and bath temperature influence the tribocorrosion of Ni-P electrodeposits. ► Tribocorrosion of Ni-P electrodeposits is related to the corrosion film and pitting behavior.