Anodic dissolution of the (100) and (110) faces of iron monosilicide in a sulfuric acid electrolyte

Using cyclic voltammetry combined with an atomic absorption analysis, it is shown that, under anodic polarization of an FeSi single crystal in 0.5 M H₂SO₄, the metal-enriched (100) face dissolves faster. Fluoride-containing compounds promote anodic process due to dissolution of the surface layer of SiO₂ and Si