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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 79  2020
Study on Wear Mechanism and Contact Temperature against Dry Sliding Wear of Ni-Al2O3 Nanocomposite Coating
Challakere Ramadas Raghavendra,1, * Satyappa Basavarajappa,2 Irappa Sogalad3 and Kishan Naik3
Pages : 139-143
DOI : 10.1080/0371750X.2020.1779614
Abstract
Dry sliding wear experiments were carried out at constant normal load and sliding speed on electrodeposited Ni and Ni-?-nano Al2O3 coatings. The coating surfaces were worn against EN-32 HRc hardened steel in pin-on-disc test rig. The work was concentrated on the pin temperature, frictional force and specific wear rate of the coating which were measured as the function of sliding distance. The Ni coating was reported with lower frictional force and pin temperature in comparison with Ni-Al2O3 composite coating. Specific wear rate of the coating with nanoparticles was found to be lower than that of without particles in the Ni matrix. Pure abrasive nature of wear was reported for Ni-Al2O3 composite coating. This resulted in higher pin temperature for the composite coating with nanoparticles. The lower specific wear rate of Ni-Al2O3 is attributed to the hard nature of nanoparticles and resistance to thermal plastic deformation by the coating. Characterization of the coating was carried out by SEM, EDS, XRD analysis. [Keywords: Nanocomposite coating, Dry sliding wear, Light metal, Pin temperature, Friction]
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