Comparative Analysis on Reinforcement of Potential Additives in WOKA
Cermet HVOF Coating Subjected to Slurry Erosion in Ash Conditions

Singh, Jashanpreet; Gill, Rana; Kumar, Satish; Mohapatra, S.K.

doi:10.22068/ijmse.2834

Volume 19, Issue 4 (Desember 2022) IJMSE 2022, 19(4): 1-12 | Back to browse issues page

‎ 10.22068/ijmse.2834

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Singh J, Gill R, Kumar S, Mohapatra S. Comparative Analysis on Reinforcement of Potential Additives in WOKA Cermet HVOF Coating Subjected to Slurry Erosion in Ash Conditions. IJMSE 2022; 19 (4) :1-12
URL: http://ijmse.iust.ac.ir/article-1-2834-en.html

Comparative Analysis on Reinforcement of Potential Additives in WOKA Cermet HVOF Coating Subjected to Slurry Erosion in Ash Conditions

Jashanpreet Singh

, Rana Gill

, Satish Kumar

, S.K. Mohapatra

Abstract: (7963 Views)

In this paper, an investigation was carried out to test the suitability of potential additive materials in
WOKA 3533 (WC-10Co4Cr) cermet HVOF coating subjected to slurry erosion in ash conditions. The additives
namely molybdenum carbide, yttrium oxide, and zirconium oxide were added in equal percentages (3 wt.%) in
WOKA cermet powder. High-velocity oxy-fuel (HVOF) spraying was performed to develop the additive-based
WOKA cermet coatings. The slurry erosion in ash conditions was tested using the pot tester. Microstructural and
mechanical properties of traditional and additive-based WOKA cermet coatings were also tested in the present
study; for example, microstructure, crystalline phases of as-sprayed coatings, and microhardness. Results present a
comparison of surface erosion wear of different cermet coatings. It was found that the yttrium oxide was a suitable
additive for the WOKA cermet coatings than the molybdenum carbide. However, zirconium oxide is unsuitable for
WOKA cermet coatings in erosion wear applications.

Keywords: Slurry erosion, HVOF coating, cermet, slurry pump, ash transportation