A practical method for determining pit depths using X-ray attenuation in EDX spectra
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Date
2015-04
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Abstract
A practical method has been developed for rapidly determining the depth of a corrosion micro-pit from the path lengths of X rays passing through the walls of the pit on their way to an X-ray detector. The method takes advantage of the attenuation of the Bremsstrahlung and characteristic X-ray radiation accompanying each X-ray spectrum, and the results are verified independently using AFM and the special pit geometry surrounding MnS inclusions in 1018 carbon steel. The method has general validity and is especially valuable in those cases where the pit depth-to-width ratio is too steep to measure using the conventional methods.
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Keywords
Physics, Optics, Pitting corrosion
Citation
Avci, Recep, Bret H. Davis, Mark L. Wolfenden, Laura R. Kellerman, Kilean Lucas, Joshua Martin, and Muhammedin Deliorman. A practical method for determining pit depths using X-ray attenuation in EDX spectra. Corrosion Science. April 2015. Pages 9-18.