Effect of Stress on the Electrochemical Corrosion Behavior of Mg-Zn-In-Sn Alloy

摘要

Effects of stress on the electrochemical corrosion behaviours of Mg-Zn-In-Sn alloy anode wereevaluated. Open circuit potential (OCP), loop current (LC) measurements, scanning electronmicroscopy (SEM) and electron probe micro-analysis (EPMA) analyses were used to investigateelectrochemical properties, corrosion surface and cross section characteristics of alloy anodes. Theresults show that OCPs of Mg-Zn-In-Sn alloy anode are negatively removed and the LCs increase bystresses. Corrosion product films of alloy anodes are easy to shed off and the thicknesses of filmsdecrease with increasing of stresses. LC calculation results are in almost agreement with thoseobtained by measurements. By adjusting the Tafel factors, the calculated results of LC were mainlyconsistent with the experimental results. The infuence of stresses on the LCs was revealed on thetheoretial.