表面処理・腐食
Mn添加鋼のFe酸化物還元挙動に及ぼす鋼中Si添加の影響
2018 年 104 巻 9 号 p. 509-516
詳細
2018 年 104 巻 9 号 p. 509-516
The Influence of the Si content of Mn-added steel sheets on the reduction of Fe-oxide was investigated. 5.2 mass%Mn with 0, 0.2 and 0.5 mass%Si steel was oxidized and annealed in 10% H2 atmosphere. Reduction speed of Fe oxide was faster in 0.2%, 0.5%massSi steel than that in 0%Si steel. It is considered the difference of reduction speed of Fe oxide depends on the composition of Fe oxide. Si addition increased Fe2O3 and decreased wustite (FeO) in Fe oxide. Reduction from hematite (Fe2O3) to magnetite (Fe3O4) would introduce larger lattice defects into Fe oxide and it lead to the higher diffusion rate of O.
