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Title: Nanohardness and wear behaviour of AISI 1040 steel coated with Ti-6Al-4V 4B4C by magnetron sputtering
Authors: Russel, Malkiya Rasalin Prince
Natarajan, Selvakumar
Keywords: Sputtering;Nanoindentation;Ball on discwear;Ti-6Al-4V-4B4C
Issue Date: Jun-2020
Publisher: NISCAIR-CSIR, India
Abstract: The Ti-6Al-4V-4B4C composite coatings have been deposited on AISI 1040 steel substrates by magnetron sputtering. The composition, structure, and topography of the coated surface have been explained by SEM, XRD, FT-IR and AFM. The constant coating thicknesses of 80 nm and 115 nm obtained for 0.5 h and 1h coating time, respectively. Wear tests have been conducted on the coated AISI 1040 steel substrates by using ball-on-disc apparatus under 2N and 3N loads at room temperature. The Ti-6Al-4V-4B4C coating has shown an excellent wear rate with a lower coefficient of friction. The nano-hardness and elastic modulus of the AISI 1040 steel coated with Ti-6Al-4V-4B4C has been attained by the AFM nano indentation technique that showed the maximum value of 10.7 GPa and 206.4 GPa, respectively. Ti-6Al-4V-4B4C composite coatings have displayed to lowest wear rates among all loading conditions, hence signifying that it could be a promising alternative to other hard coatings.
Page(s): 518-528
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.27(3) [June 2020]

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