Abstract
In this paper, a new electromagnetic method is developed for detecting corrosion as well ad determining the thickness, rate of accumulation, and electrical properties of the modified material. This noncontact method uses a Gaussian resonator operating in the range [approximately] 20-200 GHz. In fact, a window can separate the sample and the measurement electronics allowing in situ diagnostics. Experiments have been done on the oxidation of Fe and the sulfidation of Cu and Ag. The growth thicknesses determined from this technique agree very well with those calculated from mass change or quartz crystal resonance data. The electrical properties calculated for the sulfide growth layers also agree reasonably well with published values.
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