Title: Microstructure and wear behaviour of Ni-based/TiC composite coating

Authors: Soner Buytoz; Musa Kilic; Cemal Carboga

Addresses: Faculty of Technology, Materials and Metallugy Engineering, Firat University, Elazig, Turkey ' Department of Manufacturing Engineering, Faculty of Technology, Batman University, Batman, Turkey ' Faculty of Engineering and Architecture, Metallurgy and Materials Engineering, Nevsehir Hacı Bektas Veli University, Nevsehir, Turkey

Abstract: The purpose of this study was to produce a metal matrix composite by adding TiC into a Ni-based matrix with the tungsten inert gas method and to measure the wear performance. TiC powder was added into the NiCrBSi alloy powders. With increasing current values, decreases in the pore ratio and increases in the density of the eutectic structures and the thickness of the coating layer occurred. In addition, it was determined that increasing energy input improved the mechanical properties. According to XRD results, it was seen that Ni₃B, γ-Ni, CrB, Cr₂B, M₂₃C₆ (Cr₂₃C₆), M₃C(Fe₃C), and TiC complex carbide and boride phases were formed in the coating and the hardness values of these phases increased in the range of 2-2.5 times. Wear tests showed that the hard carbide and borides in the structure caused an overall reduction in the coefficient of friction and weight loss values of the coating layers.

Keywords: cladding; friction of coefficient; microstructure; γ-Ni; TiC; wear.

DOI: 10.1504/IJSURFSE.2022.122187

International Journal of Surface Science and Engineering, 2022 Vol.16 No.1, pp.71 - 90

Received: 20 Apr 2021
Accepted: 28 May 2021
Published online: 11 Apr 2022 *

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