In situ conversion electron Moessbauer spectrometry applied to the study of the corrosion products formed in solution

The new gas-flow type detector chamber was designed for the in situ CEM spectrometric study of solid-liquid interface. The chamber has both a proportional counter and a solution cell. A sample was immersed in the solution of the lower part of the chamber and a CEM spectrum was collected in the upper after emersion of the sample by continuous rotation of it. It was found that a control of a revolution rate of a sample and the counting gas flow rate was important for good performance. The in situ CEMS was applied to the analysis of corrosion products formed on a steel in various solutions and its usefulness was demonstrated. (Auth.)