Calcium hexaboride reinforced Nickel-Phosphorus composite coating for increasing the wear properties of low carbon steel. (2021)

• Record Type: Journal Article
• Authors: Premkumar, A.; Elayaperumal, A.; Arulvel, S.; Jagatheeshwaran, M.S.; Seenuvasaperumal, P.
• Is Part Of: Materials today. Volume 43:Supplement(2021)Part 2
• Page Start: 851
• Page End: 856
• Publication Date: 2021
• Subjects: Electroless deposition -- Nickel -- CaB6 -- Hardness -- Wear; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2020.07.034
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The present study reports the wear behavior of Calcium hexaboride (CaB6 ) reinforced Nickel-Phosphorus (Ni-P) composite coating. Nickel-Phosphorus/Calcium hexaboride coatings were fabricated on mild steel with various dispersion of CaB6 in the Ni-P bath using Electroless deposition process. Surface characteristics like morphology, phase analysis, surface roughness, 3D surface image and surface hardness were measured and correlated. The composite coating of 2.0 g/l dispersion of CaB6 showed no pores in the surface of the coating. Different intermetallic phases (Ni3 P and Ni12 P5 ) were formed for the heat treated Ni-P/CaB6 coatings and also found decreased for the high dispersion of CaB6 (3.0 g/l). Maximum surface hardness of 832 HV0.05 and better wear resistance was obtained for Ni-P/CaB6 (2.0 g/l) coating compared to other deposit. Wear track study evidenced the control of severe delamination wear of Ni-P deposit after the reinforcement of CaB6 . Abrasive wear mechanism was the profound wear mechanism exhibited during the sliding of Ni-P/CaB6 coating against the En-31 steel.