Studying the Wear Behavior of applied coats on Titanium by Chromium Electroplating and Plasma Nitriding Processes
The surface properties of industrial parts and especially wear behavior of them plays an important role in life service of them. Chromium coat and plasma nitriding are two common ways of applying hard coat on diverse substrates. In this paper, both of these coats applied on titanium substrate as an advanced engineering materials and the wear behavior of them were compared. For this aim, Pin on disk test was carried out and the weight loss was measured. For determining the wear mechanism of the sample, field emission scanning electron microscopy study was carried out on wear traces. Results show that although the achieved surface micro hardness value of chromium coats is higher than nitride samples, 594 HV at current density of 50 A/dm2 and 60 min versus 528 HV at 600 oC for nitride sample, but they show the weaker wear resistance. Adhesive wear mechanism is determined mechanism at both samples. Also, the lowest coefficient of friction is obtained at sample nitride at 600 oC
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