(湖南大学 材料科学与工程学院， 长沙 410082)
摘 要: 采用复合沉积方法在普通碳钢基底上沉积碳纳米管/镍基复合镀层。 用腐蚀实验、 电化学方法研究了复合镀层在3.5%NaCl溶液中的耐腐蚀性能， 并讨论了其耐腐蚀机理， 对普通碳钢和纯镍镀层也进行了比较研究。 结果表明： 碳纳米管的加入显著提高了复合镀层的耐腐蚀性能；耐腐蚀的原因在于碳纳米管的复合镀层更加致密， 隔离了腐蚀介质， 并阻止了蚀坑的增大， 同时， 碳纳米管促进了镍的纯化， 从而提高镀层的耐蚀性。
关键字: 碳纳米管； 复合镀层； 腐蚀
（School of Materials Science and Engineering,
Hunan University, Changsha 410082, China）
Abstract:Carbon nanotubes/Ni composite coating was obtained on steel matrix by co-deposition method. The corrosion resistance properties of carbon nanotubes/Ni composite coating in 3.5% NaCl solutions were investigated by mass-loss method and electrochemical corrosion experiment, and its corrosion resistance mechanism was discussed. The corrosion behaviors of nickel coating and Fe were compared with the composite coating. The results show that the corrosion resistance of composite coating is improved significantly by incorporation of carbon nanotubes.
Key words: carbon nanotubes； composite coating； corrosion
