Mössbauer Transmission Spectroscopy of Oxide Films Stripped from Low-Carbon Steel

Abstract

AbstractIn order to obtain well-defined Mossbauer spectra of oxide films on low-carbon steel, it is beneficial to separate the films from the substrate. Chemical stripping in a solution of iodine in methanol in dry and oxygen-free conditions enables the oxide films to be separated without changing their composition and structure. The only by-product is cementite extracted from the low-carbon steel substrate during stripping. The Mossbauer transmission spectra obtained from the stripped oxide films yield information on the phase composition of the films and on deviations from stoichiometry of iron oxides present in the films.