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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

A. Öz ; Mehmet Akif Ersoy University, Burdur, Turkey
R. Samur ; Marmara University, İstanbul, Turkey
H. Mindivan ; Ataturk University, Erzurum, Turkey
A. Demir ; Marmara University, İstanbul, Turkey
S. Sagiroglu ; Karabuk University, Karabuk, Turkey
A. K. Yakut ; Suleyman Demirel University, Isparta, Turkey

Puni tekst: engleski pdf 725 Kb

str. 368-370

preuzimanja: 1.245



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.

Ključne riječi

corrosion; HVOF; Ni-based coating; post-heat treatment; wear

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