Abstract
Comparative studies have been made of the detection of Mn in a low alloy steel containing 1.4% Mn using Auger electron spectroscopy (AES) and soft X-ray appearance potential spectroscopy (APS). Quantitative analysis can be made using both techniques, although in the case of AES, spectrum subtraction techniques have to be used to retrieve the Mn spectrum due to severe peak overlap with the Fe spectrum. Excellent quantitative agreement between AES and APS is found and it is demonstrated that care must be exercised to ensure that large electron current densities (> 2 mA/cm 2) are not used in acquiring data, otherwise significant surface segregation of Mn may occur.
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