Abstract：Ordered microstructures on metal surface could obviously improve the parts' surface properties. A novel process of fabricating micro-dimple array through electrodeposition method using colloidal particles mask on a metal surface was presented and studied by finite element method and experiments, and a method of improving the uniformity of the micro-dimple array was discussed. The results showed that the morphology and the uniformity of micro-dimples were influenced by the time and the current density of the electrodeposition process, and the hydrogen evolution reaction was the major factor in influencing the stability of the colloidal particle mask on the metal surface. The proper heat treatment process could improve the uniformity of the micro-dimple array electrodeposited using the heated colloidal particles mask.

Keyword：colloidal particles mask;electrodeposition;micro-dimple array;finite element;uniformity;