A mossbauer and X-ray study of the corrosion products of mild steel plates buried in four New Zealand soils

Abstract

57Fe Mossbauer spectroscopic and X-ray diffraction methods have been used to study the nature of the corrosion products of mild steel plates buried in four New Zealand soils of widely differing properties. This shows that superparamagnetic goethite (á-FeOOH) is the major corrosion product, with akagankite (â-FeOOH) and lepidocrocite (y-FeOOH) the next most abundant. Magnetite (Fe3O4) is also present in some samples.