Electrical conductivity, microstructure and wear properties of Cu-Mo coatings
Serkan Islak*, 1, Uğur Çalıgülü2, Husain R.H. Hraam3, Cihan Özorak4, Vahdettin Koç5
1 Department of Mechanical Engineering, Kastamonu University, Kastamonu, Turkey
2 Department of Metallurgical and Materials Engineering, Fırat University, Elazığ, Turkey
3 In Institute of Science, Kastamonu University, Kastamonu, Turkey
4 Department of Metallurgical and Materials Engineering, Kastamonu University, Kastamonu, Turkey
5 Technical Sciences Vocational High School, Adıyaman University, Adıyaman, Turkey
In this study, Cu–Mo composite coatings were
produced on copper substrate by plasma spray technique. Electrical
conductivity, microstructure and wear properties of the composite coatings were
investigated. Microstructure and phase composition of the coatings were
examined by using optical microscopy (OM), scanning electron microscope (SEM),
X-ray diffraction (XRD), and energy-dispersive X-ray spectroscopy (EDS). The
microhardness experiments were also performed by using a microhardness machine.
The electrical conductivity properties of the coatings were evaluated with eddy
current instruments. Wear tests were performed by pin-on-disc method. Although
the electrical conductivities of the coatings are very small compared to the
substrate, it has been determined that the coatings exhibit very good
tribological property and high hardness in comparison to the substrate.
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