Electrochemical Characterization of Az31 Magnesium Alloy Treated by Ultrasonic Impact Peening (Uip)

https://doi.org/10.26552/com.C.2018.3.24-29

  • Daniel Kajanek
  • Branislav Hadzima
  • Filip Pastorek
Keywords: magnesium alloy, corrosion, ultrasonic impact peening

Abstract

Electrochemical characteristics of AZ31 magnesium alloy after impacting by ultrasonic impact peening (UIP) were measured in order to evaluate its effect on corrosion resistance of mentioned alloy. For this purpose, potentio-dynamic polarization (PD) tests and electrochemical impedance spectroscopy (EIS) of ground and impacted samples were performed in 0.1 M NaCl solution at the temperature of 22±2 °C after 5 minutes of potential stabilization. The obtained PD curves were analysed using the Tafel extrapolation method and data from EIS measurements in form of Nyquist plots were quantified by the equivalent circuit method. The results showed clearly that application of the UIP significantly deteriorated corrosion resistance of AZ31 alloy in the chosen testing solution.

Author Biographies

Daniel Kajanek

Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia and Research Centre, University of Zilina, Slovakia

Branislav Hadzima

Research Centre, University of Zilina, Slovakia

Filip Pastorek

Research Centre, University of Zilina, Slovakia

Published
2018-09-30
How to Cite
Kajanek, D., Hadzima, B., & Pastorek, F. (2018). Electrochemical Characterization of Az31 Magnesium Alloy Treated by Ultrasonic Impact Peening (Uip). Communications - Scientific Letters of the University of Zilina, 20(3), 24-29. https://doi.org/10.26552/com.C.2018.3.24-29
Section
Mechanical Engineering in Transport