Study on Wear Mechanism and Contact Temperature against Dry Sliding Wear of Ni-Al2O3 Nanocomposite Coating. Issue 3 (2nd July 2020)

• Record Type: Journal Article
• Authors: Raghavendra, Challakere Ramadas; Basavarajappa, Satyappa; Sogalad, Irappa; Naik, Kishan
• Is Part Of: Transactions of the Indian Ceramic Society. Volume 79:Issue 3(2020)
• Page Start: 139
• Page End: 143
• Publication Date: 2020-07-02
• Subjects: Nanocomposite coating -- Dry sliding wear -- Light metal -- Pin temperature -- Friction; Pottery -- India -- Periodicals; 666.306254
• DOI: 10.1080/0371750X.2020.1779614
• Languages: English
• ISSNs: 0371-750X

Abstract

ABSTRACT: Dry sliding wear experiments were carried out at constant normal load and sliding speed on electrodeposited Ni and Ni-α-nano Al2 O3 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-Al2 O3 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-Al2 O3 composite coating. This resulted in higher pin temperature for the composite coating with nanoparticles. The lower specific wear rate of Ni-Al2 O3 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. GRAPHICAL ABSTRACT: