Abstract
Optimization of the wear performance of electroless Ni-P coating is carried out with the help of Taguchi orthogonal array design. Tribological testing parameters (applied load, sliding speed and duration of testing) are optimized with the help of L27 array in order to get the best wear performance from the coating. Load and time were found to be the most significant factors. Interaction between load and time is also found to hold some amount of significance towards the system response (wear). The characterization of the coating is carried out through scanning electron microscopy, energy dispersive X-ray analysis and X-ray diffraction analysis. The coating morphology is found to resemble a nodular structure and the coating is mainly amorphous in as deposited state. However, post heat treatment at 400ºC for one hour the coating transforms into crystalline structure. The wear mechanism is also studied and found to be a mixture of abrasive and adhesive wear phenomena.
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