| 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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