China Jiliang University

Guoying Wei

Benfeng Zhu

Zhongquan Zhang

A preparation method, a product and an application of a composite membrane with a self-repairing function are provided by the present application, relating to the technical field of surface treatment of metallic materials. The preparation method includes the following steps: adding cobalt salt, tungsten salt, complexing agent and buffering agent into water to obtain a mixed solution, and adjusting a pH value to acidity to obtain an acidic solution; adding cerium oxide and surfactant into the acidic solution to obtain an electrolyte system; and placing a metal substrate in the electrolyte system for electrodeposition to obtain the composite membrane with self-repairing function. By means of constant potential composite electrodeposition on a metallic material substrate, the invention eventually forms a micron-scale composite membrane with a self-healing function and a thickness of 6-8 micrometers on the surfaces of the metallic materials.

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Hangzhou, China

Guoying Wei