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中文摘要：
采用纳米复合电沉积技术，在纯铜和低碳钢两种金属基体表面制备了纳米Al2O3／Ni复合镀层。研究了电沉积工艺参数对纳米AAl2O3／Ni复合镀层表面憎水性（接触角）的影响。结果表明：铜基纳米复合镀层，随电流密度的增加，水滴在镀层表面形成的接触角减小；水滴在镀层表面形成的接触角随电沉积时间的延长先增大后减小。电流密度对水滴在钢基纳米复合镀层表面接触角的影响规律与对铜基纳米复合镀层表面接触角的影响规律相似，但变化趋势显著；电沉积时间的延长和镀液温度的提高对水滴在镀层表面接触角的影响不大。因此，适当控制电流密度等工艺参数，所制备的复合镀层表面的接触角较大，从而具有良好的憎水性。
英文摘要：
The nano-Al2O3/Ni composite coatings were prepared on pure copper and mild steel by nano-composite electrodeposition technology. The Influences of electrodeposition technological parameters on hydrophobicity （contact angle） of nano-Al2O3/Ni composite coating were studied. Experimental results show that water contact angle on copper base nano-composite coatings increases with the raising of current density and increases at first and then decreases with the raising of electroplating time. And the influence of current density on water contact angle of the mild steel base nano-composite coatings is similar to the copper base nano-composite coatings, but alters observably with the raising of current density, and water contact angle change less with the raising of electrodeposition time and bath temperature. Therefore, the composite coatings prepared under optimum plating conditions have good hydrophobic behavior.
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