Indian Journal of Engineering & Materials Sciences

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Nanohardness and wear behaviour of AISI 1040 steel coated with Ti-6Al-4V 4B4C by magnetron sputtering


Affiliations
1 Department of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore - 641114, Tamil nadu, India
2 Department of Mechanical Engineering, Mepco Schlenk Engineering College, Sivakasi - 626005, Tamil Nadu, India

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.
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  • Nanohardness and wear behaviour of AISI 1040 steel coated with Ti-6Al-4V 4B4C by magnetron sputtering

Abstract Views: 167  | 

Authors

Malkiya Rasalin Prince Russel
Department of Mechanical Engineering, Karunya Institute of Technology and Sciences, Coimbatore - 641114, Tamil nadu, India
Selvakumar Natarajan
Department of Mechanical Engineering, Mepco Schlenk Engineering College, Sivakasi - 626005, Tamil Nadu, 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.