在含有FeSO4·7H20、NiSO4·6H2O、Na2WO4·2H2O、Na3C6H5O7·2H2O和YC-4添加剂的溶液中,电沉积制备了不同钨含量的镍铁钨合金,对所得镀层的化学组成、表面形貌、微观结构,显微硬度及耐蚀性进行了表征.随着镍铁钨合金镀层中钨含量的增加,其微观结构由晶态转变为非晶态.钨质量分数为21%的镍铁钨合金镀层表观光亮光滑,具有致密的纳米晶结构,其晶粒尺寸为30～40 nm,即使不通过热处理,也具有很好的显微硬度和耐蚀性.该工艺可望取代传统镀铬工艺.
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