为了深入研究纳米SiC对Ni—P电镀层在NaCl溶液中的电化学行为的影响，电沉积制备了Ni—P／纳米SiC复合镀层。采用扫描电子显微镜（SEM）观察了镀层的微观形貌，利用动电位极化曲线和交流阻抗技术研究了Ni-P／纳米SiC复合镀层在3．5％NaCl溶液中的电化学行为。结果表明：经过24h浸泡，非晶Ni—P镀层和Ni-P/SiC2复合镀层在3．5％NaCl溶液中具有较高的电荷转移电阻，表现较好的耐蚀性；Ni—WSiC20复合镀层在NaCl溶液中随着浸泡时间的延长，Nyquist谱半圆弧减小，因而镀层耐蚀性较差。
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