COMPARISON OF WEAR AND HARDNESS BEHAVIOR OF NiP - NiPWS2 COATINGS

Abstract

Wear resistance is a critical factor in various industries where components are subjected to friction, wear and abrasion. In this paper, we investigate the fabrication and characterization of nickelphosphorus (Ni-P) and nickel-phosphorus-tungsten disulfide (Ni-P-WS2) electroplating coatings, with a particular focus on wear resistance and hardness properties. The focus of this work is to investigate the wear resistance properties and investigate whether the hardness decreases or increases with the addition of WS2 particles of these coatings and evaluate their potential in various applications. In the study, 2 different coatings, Ni-P and Ni-P-WS2, were produced. In addition to the Ni-P-WS2 bath, WS2 particles were added at a concentration of 0.1 g/L. The current density was 18 A/dm2 and the stirring speed, pH and temperature were kept constant. The obtained samples were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis and the tribological behavior of the produced electrocoatings was studied. The results show that the incorporation of WS2 nanoparticles into Ni-P coatings imparts excellent tribological properties to the coating by combining the hardness and wear properties of Ni-P with the lubricating properties of WS2 , further reducing friction and wear and increasing hardness. In this case, the benefits of Ni-P and Ni-P-WS2 coatings can be utilized in a wide range of industries. In the automotive sector, these coatings can be applied to engine components such as pistons, connecting rods and crankshafts to increase their durability and reduce friction.