EFFECT OF HEAT TREATMENT ON THE WEAR AND CORROSION BEHAVIORS OF A GRAY CAST IRON COATED WITH A COLMONOY 88 ALLOY DEPOSITED BY HIGH VELOCITY OXYGEN FUEL (HVOF) THERMAL SPRAY


Oz A., Samur R., Mindivan H., Demir A., Sagiroglu S., Yakut A. K.

METALURGIJA, vol.52, no.3, pp.368-370, 2013 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 3
  • Publication Date: 2013
  • Title of Journal : METALURGIJA
  • Page Numbers: pp.368-370

Abstract

The present work has been conducted in order to determine the influence of heat treatment on the wear and corrosion behaviours of a gray cast iron substrate coated with a Ni base coating deposited by HVOF thermal spray. The wear resistance of the coatings was obtained using a reciprocating wear tester by rubbing a 10 mm diameter steel ball on the coatings at normal atmospheric conditions. Corrosion tests were performed using potentiodynamic polarization measurements in a 3,5 % NaCl solution. It was observed that the corrosion and wear resistance of the coatings increased along with the reduction of porosity and roughness by the heat treatment.