Friction and Wear of Ni-P Electroless Plating By Adding for WO 3 Particles

Electroless Ni (nickel) plating is known as an industrially unique wet plating. In particular, nickel plating is widely used for precision mechanical parts, pipes, bearings, cylinders, etc. due to its corrosion resistance, excellent hardness, and uniform plating properties. However, depending on the use environment, due to the low thermal stability, the grain growth and recrystallization of the plating layer reduce the corrosion prevention properties. For the purpose of improving thermal stability, elements such as W (Tungsten) and Mo (Molybdenum) can be added to improve mechanical properties. The composite plating containing W shows excellent heat resistance, and hardness and abrasion resistance can be improved. In addition, there is a trend to study composite plating of PTFE (Polytetrafluoroethylene) and MoS 2 (Molybdenum disulfide) to improve lubricity and non-adhesion. In this study, Ni-P-PTFE-WO 3 was plated using WO 3 (Tungsten trioxide) powder to improve thermal stability, abrasion resistance, and lubricity. The experiment was plated at 90 ° C for 1 hour in the plating solution, and the heat treatment process was performed at 300 ° C for 1 hour. We analyzed the change in crystallinity before and after heat treatment using XRD (X-ray Diffraction), and observed the plating thickness and surface using SEM (Scanning Electron Microscope). By using wear test, the change of abrasion resistance and lubricity with and without WO 3 plating will be compared.