Applications of Micro-Droplet Cell to Study of Localized Corrosion Resistance of Stainless Steels

Small-Area Techniques for Micro- and Nanoelectrochemical Characterization: A Review

“…It was found that the polarization behaviors of metallic materials are also strongly dependent on the scan rate. , Normally, a slow scan rate (≤1 mV/s) is applied to collect potentiodynamic polarization data at the hundred-micrometer scale. In some cases, high scan rates (e.g., 10, 16.6, 50, 75, 100 mV/s) have been applied to minimize the test durations and reduce the risk of leakage or blockage, which will influence the electrochemical measurements and mislead the electrochemical parameter extraction. , Therefore, analysis and discussion of the results should be careful to avoid misunderstanding the local electrochemical behavior.…”

“…Previous studies reveal that the applications of the MCC technique are substantial in corrosion science, and they are been listed in Table . Most researchers focused on the corrosion behaviors of stainless steel ,,− and aluminum alloys. ,,,− Other metals with heterogeneous microstructures, such as welded joints, ,,− magnesium alloys, , additively manufactured alloys, as well as titanium alloys, copper, metallic glasses, and electronics, have also been investigated. With the high resolution of MCC, it has been applied to perform local electrochemical tests on single grains (crystallographic orientation effect), , grain boundaries, micro cracks, defects, ,, different phases, , inclusions, intermetallics, , and precipitates in different metals and alloys, indicating that the influence of microstructures on local electrochemical properties is critical for interpreting corrosion behaviors of metallic materials.…”