A solution of manganese nitrate (Inorganic Ventures, Christiansburg, VA) (for soluble Mn), Mn powder (325 mesh), Mn (II) oxide, and Mn (III) oxide (325 mesh) (all from Sigma-Aldrich, St. Louis, MO), and Mn (IV) oxide (Sigma-Aldrich, St. Louis, MO; 60–230 mesh, Reagent Plus grade), a SiMn alloy material characterized by Thomassen et al. 29 ...
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