铬镀层具有许多优点，但对环境有严重污染。采用脉冲电沉积方法制备了含22％w，26％w，31％w和36％W的纳米晶Ni—W—Cr—Nd合金层，用作代铬镀层。通过扫描电镜、电子能谱、X射线衍射等对代铬镀层的表面形貌、成分和相结构进行了表征；利用动电位扫描、电化学阻抗技术考察了其耐蚀性能。结果表明：4种W含量的Ni—w—Cr—Nd合金镀层表面均匀致密，无裂纹，晶粒尺寸分别为14，17，21，26nm；含22％w镀层的抗高温氧化性能和耐蚀性能均优于铬镀层；22％W的镀层400℃热处理后硬度为1132HV，磨损失重率为0．0183mg／（cm2·h），具有较高的硬度和较好的耐磨性。
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