Determination of Surface Inhomogeneities Using a Scanning Probe Impedance Technique
- 1 June 1980
- journal article
- Published by Association for Materials Protection and Performance (AMPP) in Corrosion
- Vol. 36 (6) , 269-274
- https://doi.org/10.5006/0010-9312-36.6.269
Abstract
A scanning AC probe technique has been developed to measure the impedance variations of electrode surfaces in electrolytes resulting from heterogeneities. The technique can be applied to all conducting surfaces in conducting liquids. Measurements have been conducted on abraded specimens, partially etched Alloy 600, mixed alloy surfaces, Type 304 stainless steel welds, and corroding polymer coated zinc plated surfaces. With all specimens, marked variations in impedance were observed.Keywords
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