Regresar

Electrochemical impedance studies on tribocorrosion of coatings Al<inf>x</inf>Ti<inf>1-x</inf>N deposited on austenitic steels

Abstract:

This paper presents the evaluation of properties tribocorrosion of the AlxTi1-xN multilayer, deposited on AISI 316L through the technique of physical vapor deposition magnetron sputtering. Corrosion tests were conducted, wear dry (without lubrication) and tribocorrosion tests (synergy between corrosion and wear) which they were carried out with a potentiostat and a pin-on-disk to which is was adapted to an electrochemical cell with three electrodes. The evaluation of the tests tribocorrosion it performed using the technique electrochemical electrochemical impedance spectroscopy (EIS). The coefficient of friction depends on the mixture of titanium and aluminum, generating surfaces with better mechanical properties in a 60 Ti -40 Al mix, with respect to electrochemical system assisted by mechanical wear it corresponds the best system having higher content of titanium.