Method for testing anti-corrosion performance of motor vehicle anti-corrosion wax

The invention provides a method for testing the anti-corrosion performance of motor vehicle anti-corrosion wax, and the method specifically comprises the following steps: (1) testing the polarization dynamic potential of a metal sample with a coating, forming a dynamic potential polarization curve, and fitting the AC impedance spectrum and the self-corrosion potential of the coating sample; (2) performing a salt spray test on the metal coating sample, and recording the corrosion condition of the surface of the test piece in the salt spray test process; and (3) comprehensively evaluating the corrosion resistance of the coating metal sample according to the step (1) and the step (2). Electrodynamic potential polarization and electrochemical impedance spectroscopy are adopted to carry out an electrochemical performance test on the corrosion resistance of the coating metal test piece, a salt spray test is adopted to simulate the corrosion process of a motor vehicle in service, and the most suitable coating under