in the area from the base plate to the surface, FeO, Fe 3O 4 and Fe 2O 3 are ascent ordered by the quantity in the iron oxide scales, while the inner portion is mainly comprised of FeO.

• 在靠近基板到表层的氧化铁皮中三种铁的氧化物按FeO,Fe3O4和Fe2O3顺序逐渐增多,且内层的结构成分以氧化亚铁为主。