A Comparison of Wear Due to Abrasion of WC–Ni Coatings on Aluminium Alloy Sprayed by HVOF and Detonation Gun

In this investigation, aluminum alloy is coated with WC–Ni layer deposited by detonation spraying and high velocity oxy fuel (HVOF) spraying. The important features of microstructure and hardness of the coating are characterized extensively. The wear rates of the coating due to abrasion are determin...

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Veröffentlicht in:Transactions of the Indian Institute of Metals 2018-06, Vol.71 (6), p.1389-1399
Hauptverfasser: Lakshmi, S. Gokul, Reddy, G. M., Roy, Manish
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Reddy, G. M.
Roy, Manish
description In this investigation, aluminum alloy is coated with WC–Ni layer deposited by detonation spraying and high velocity oxy fuel (HVOF) spraying. The important features of microstructure and hardness of the coating are characterized extensively. The wear rates of the coating due to abrasion are determined for different applied loads. The worn coatings are examined under scanning electron microscopy. A correlation is established between the wear rates of the coatings due to abrasion and hardness. The results show that abrasion action takes place by both particle rolling and particle sliding. Fracture of particles during abrasion increases wear rate. In general, the wear rate due to abrasion is higher for the coating deposited by detonation spraying than that of coating deposited by HVOF spraying.
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subjects Abrasion
Abrasives
Aluminum base alloys
Chemistry and Materials Science
Coatings
Corrosion and Coatings
Detonation
Flame spraying
High velocity oxyfuel spraying
Materials Science
Metallic Materials
Scanning electron microscopy
Technical Paper
Tribology
Tungsten carbide
Wear rate
title A Comparison of Wear Due to Abrasion of WC–Ni Coatings on Aluminium Alloy Sprayed by HVOF and Detonation Gun
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