研究了热处理对不同钢铁基体表面镀铝相结构的影响.分别以Q235低碳钢,1Cr17铁素体不锈钢和201奥氏体不锈钢为基体,在摩尔比2:1的酸性AlCl_3-EMIC(1-甲基-3-乙基咪唑氯化物)室温熔盐中电沉积均匀致密的铝镀层,然后对试样在670℃下进行热处理,并用EDS,SEM和XRD等对热处理后的试样界面进行微观分析.结果表明,试样经热处理后,镀层与基体之间均发生互扩散形成合金层.Q235表面合金层呈舌状形貌向基体生长,而1Cr17和201表面的合金层平直.Q235上内外合金层为FeAl和Fe_2Al_5,并以Fe_2Al_5为主;而1Cr17的内外合金层为含Cr的Fe_2Al_5和FeAl_3相;201不锈钢经短时间热处理可保留纯Al层,30min后主要由含Cr,Ni,Mn的Fe_2Al_5和FeAl_3相组成,也形成少量的FeAl_2和FeAl相.
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