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将纳米氧化铈颗粒加入镀锌液中进行复合电沉积制得纳米复合涂层。通过失重法、ICP、SEM和 XRD方法探讨了纳米氧化铈颗粒对电沉积锌涂层的影响。结果表明 ,在同样的电沉积条件下 ,纳米复合涂层的耐蚀性明显提高 ,而微米复合涂层的耐蚀性只稍有改善 ;纳米复合涂层中氧化铈的含量高于微米复合涂层中的氧化铈含量 ;纳米氧化铈颗粒改变了锌涂层的表面组织形貌和晶体结构 ,从而提高了涂层的耐蚀性。
The nano-cerium oxide particles are added to the galvanizing solution for composite electrodeposition to obtain the nano-composite coating. The effects of nano-sized cerium oxide particles on the electrodeposition of zinc coating were investigated by weight loss method, ICP, SEM and XRD. The results show that under the same condition of electrodeposition, the corrosion resistance of nano-composite coating is obviously improved, while the corrosion resistance of micro composite coating is only slightly improved; the content of cerium oxide in nano-composite coating is higher than that of micron composite coating Layer of cerium oxide content; nano-cerium oxide particles change the zinc coating surface morphology and crystal structure, thereby enhancing the corrosion resistance of the coating.