采用电沉积方法从硫酸盐体系镀液中制备3种纳米级Fe-36Ni、Fe-44Ni、Fe-80Ni合金薄膜,应用原子力显微镜(AFM)、X射线衍射仪(XRD)、中性盐雾试验和电化学测量技术对三种Fe-Ni合金薄膜的微观结构和耐蚀性能进行了研究.结果表明,3种纳米Fe-Ni合金薄膜的耐腐蚀性能与合金的微观结构密切相关,具有单一γ相结构的Fe-80Ni耐蚀性能最好,由α-(Fe,Ni)相和γ-(Fe,Ni)相组成的混合固溶体Fe-44Ni次之,而含有单相铁、α-(Fe,Ni)相和γ-(Fe,Ni)相的混合固溶体Fe-36Ni合金最差,这是由于合金薄膜中各相电化学稳定性存在显著差异所致.
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