Effect of heat treatment on tribocorrosion of nanostructure Ni-P coatings


Tabatabaei F. , RAEISSI K., SAATCHI A., KAZMANLI K., UERGEN M.

SURFACE ENGINEERING, vol.29, no.9, pp.671-676, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 9
  • Publication Date: 2013
  • Doi Number: 10.1179/1743294413y.0000000175
  • Title of Journal : SURFACE ENGINEERING
  • Page Numbers: pp.671-676

Abstract

High phosphorus Ni-P coatings were deposited on mild steel by electroless plating, and then, they were isothermally heat treated at 400 degrees C (HT400) and 600 degrees C (HT600) for 1 h. The electrochemical behaviour of the coatings was evaluated by potentiodynamic polarisation technique in 3.5 wt-%NaCl solution. Tribocorrosion tests were also carried out in 3.5 wt-%NaCl solution. Scanning electron microscopy and three-dimensional profilometry were used to study the wear scars. The results showed that the maximum tribocorrosion resistance was obtained for heat treated Ni-P coating at 600 degrees C because of higher corrosion resistance of HT600 than that of HT400 and also higher hardness of HT600 than that of as plated coating. Moreover, the lowest friction coefficient was achieved for HT600 coating.