A comparative study of tribological and mechanical properties of composite polymer coatings on bearing steel Online publication date: Mon, 10-Dec-2018
by Anand Singh Rathaur; Jitendra Kumar Katiyar; Vinay Kumar Patel; Shubrajit Bhaumik; Anuj Kumar Sharma
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 12, No. 5/6, 2018
Abstract: In this study, epoxy and SU-8 resin along with its composites was coated over bearing steel. The graphite, talc and base oil were used to fabricate the composites using spin-coater. The tribological and surface characterisation tests were performed on both type of polymer and its composite using ball-on-disk setup, optical microscope, 3D optical profilometer, and goniometer, respectively. From the results, it can be seen that epoxy and its composites polymer showed lower coefficient of friction (~0.16), high wear resistance properties (> 102 times), improvement in mechanical properties (elastic modulus and hardness) (~3-4 times) and better hydrophobic nature as compared to SU-8 polymer (~34%) and its composites. Furthermore, a neural network model was developed to determine the influential parameters on specific wear rate and coefficient of friction.
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