Aluminum alloy with Ag coating and preparation method thereof

The invention relates to a preparation method of an aluminum alloy with an Ag coating, which comprises the following steps: S1, spraying Ag powder on the surface of an aluminum alloy matrix by adopting a cold spraying process to obtain a primary finished product, and the particle size of the Ag powder is 15-45 microns; and S2, the primary finished product is subjected to annealing treatment, and a finished product is obtained. The method is simple in process and low in cost, and the conductivity of the composite material can be greatly improved on the premise that the strength of the aluminum alloy matrix is guaranteed. In addition, the invention further provides the aluminum alloy with the Ag coating prepared by the method, and the aluminum alloy with the Ag coating has the same technical effects. 本发明涉及一种带有Ag涂层的铝合金的制备方法，包括以下步骤：S1.采用冷喷涂工艺，在铝合金基体的表面进行Ag粉的喷涂，得到初成品，所述Ag粉的粒径为15-45μm；S2.对所述初成品进行退火处理，得到成品。该方法工艺简单，成本较低，能够在保证铝合金基体强度的前提下大幅度提高复合材料的导电性能。除此之外，本发明还提供一种由该方法制备出的带有Ag涂层的铝合金，同样具有上述技术效果。