Author(s)

Xuefei Lv, Shukun Gan

Corresponding Author

Xuefei Lv

Abstract

In order to improve the surface properties of copper alloy materials, in this paper, a new process for surface passivation treatment of copper alloy materials with composite rare earth salts was obtained by orthogonal test. The corrosion resistance of the new process was evaluated by the nitric acid drop method and the salt spray test method. The morphology of the copper alloy was characterized by JSM-6490LV type scanning electron microscope. The results show that the copper alloy material treated by the new process has a nitric acid resistance time of 22 seconds, and the surface is still bright after 16 hours of salt spray experiment. The new process can change the surface characteristics of the copper alloy material, thereby improving the corrosion resistance of the copper alloy.

Keywords

Copper alloy, surface passivation, new process, nitric acid spot, salt spray test