RT Journal Article
SR Electronic
A1 Kajanek, Daniel
A1 Hadzima, Branislav
A1 Pastorek, Filip
T1 Electrochemical Characterization of Az31 Magnesium Alloy Treated by Ultrasonic Impact Peening (Uip)
JF Communications - Scientific Letters of the University of Zilina
YR 2018
VO 20
IS 3
SP 24
OP 29
DO 10.26552/com.C.2018.3.24-29
UL https://komunikacie.uniza.sk/artkey/csl-201803-0005.php
AB 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.