International Scientific Conference BALTTRIB, 2015

Tribological and Corrosion Properties of Iron-Based Alloys

E. Vernickaite, Z. Z. Antar, A. Nicolenco, R. Kreivaitis, N. Tsyntsaru, H. Cesiulis
Vilnius University; University of Sfax; Institute of Applied Physics; Aleksandras Stulginskis University

Abstract

Corrosion is responsible for industrial maintenance and industrial accidents costs. A helpful way to prevent corrosion is to develop advanced materials with highly anti-corrosive properties. The electrodeposition is one of the most attractive methods for obtaining these materials. This work deals with evaluation of the tribological and corrosion behaviour of electrodeposited Fe-W and Fe-W-P alloys. Electrodeposits were obtained from 4 different baths and were characterized by means of scanning electron microscopy; X-ray dispersive energy spectroscopy; X-ray diffraction spectroscopy. The hardness was determined by Micro-indentation carried out at normal forces varying from 98 mN up to 980 mN with a loading rate of 1961 mN/min. A ball-disc tribometer was used to study the tribological properties at 90 °C. A diamond indenter, having a radius of 100 µm, was used to carry the scratch test. Corrosion behaviour was studied using polarization and electrochemical impedance spectroscopy technique. It was investigated that in all cases Fe-W and Fe-W-P alloy coatings exhibit greater micro-hardness than the stainless steel substrate. The amorphous-like ternary Fe-W-P alloy coatings demonstrate higher wear and corrosion resistance and lower friction coefficient compared to binary Fe-W alloy coating.

Keyword(s): iron-based alloys, electrodeposition, tribology, wear, hardness, corrosion


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DOI: http://dx.doi.org/10.15544/balttrib.2015.29

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