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Microstructure Characterization of WCCo-Mo Based Coatings Produced Using High Velocity Oxygen Fuel

By Serkan Islak, Durmuş Kır, Soner Buztoy, Cihan Özorak, Mehmet Akkaş, Uğur Çalıgülü and M. Mustafa Yıldırım

Abstract

<span style="color: #515151;">The present study has been carried out in order to investigate the microstructural properties of WCCo-Mo composite coatings deposited onto a SAE 4140 steel substrate by high velocity oxygen fuel (HVOF) thermal spray. For this purpose, the Mo quantity added to the WCCo was changed as 10, 20, 30 and 40 wt. % percents. The coatings are compared in terms of their phase composition, microstructure and hardness. Phase compound and microstructure of coating layers were examined using X-ray diffractometer (XRD) and scanning electron microscope (SEM). XRD results showed that WCCo-Mo composite coatings were mainly composed of WC, W2C, Co3W3C, Mo2C, MoO2, Mo and Co phases. The average hardness of the coatings increased with increasing Mo content.</span

Topics: Engineering (General). Civil engineering (General), TA1-2040
Publisher: Pamukkale University
Year: 2015
OAI identifier: oai:doaj.org/article:ff47f35abf70428ba32bf9e0d36413a4
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