摘要
利用纳米复合电沉积方法在低碳钢基体上制备了（Zn-Co）-TiO2纳米复合镀层.分析了镀液中纳米TiO2含量、表面活性剂十六烷基三甲基溴化铵质量浓度、电流密度以及温度对镀层中Co、纳米TiO2含量的影响,得出制备（Zn-Co）-TiO2纳米复合镀层的最优工艺条件：60g/L纳米TiO2、1.0g/L表面活性剂十六烷基三甲基溴化铵、Jk为4A/dm2、θ为55～60℃.通过扫描电镜、极化曲线对镀层的形貌特征及耐蚀性能进行了分析.结果表明,纳米复合镀层表面完整,没有明显的缺陷;TiO2均匀地分布在Zn-Co合金镀层中,进一步提高了镀层的耐蚀性能.
（Zn-Co）-TiO2 nanocomposite coating was obtained by electrodeposition on steel substrate. The effects of TiO2 particle concentration, surfactant mass concentration in the bath, cathode current density and temperature on the content of Co and TiO2 particle in the coating were studied. The optimum parame- ters for electrodeposition were studied. Under the optimized conditions, TiO2 particle concentration was 60 g/L, surfactant mass concentration was 1.0 g/L, current density was 4 A/din2 and bath temperature was 55 -60℃ respectively. The surface morphology and corrosion resistance were investigated by SEM and potentiodynamic polarization. The results revealed that the surface of the coating was complete and no ob- vious defects could be detected;TiO2 nanoparticles were uniformly dispersed in Zn-Co alloy coating and the corrosion resistance of the coatin~ was further imnroved.
出处
《电镀与精饰》
CAS
北大核心
2014年第5期9-13,31,共6页
Plating & Finishing
