Three-electrode device for corrosion electrochemical test

The invention belongs to the technical field of corrosion electrochemical testing, and discloses a three-electrode device for corrosion electrochemical testing, which comprises a reaction tank cover plate, a reaction tank container, a working electrode assembly, a reference electrode and an auxiliary electrode, a working electrode assembly, a reference electrode and an auxiliary electrode are fixedly mounted on the reaction tank cover plate, the working electrode assembly comprises a plurality of working electrodes, the working electrodes are in threaded connection with the reaction tank cover plate, and during testing, the working electrodes are sequentially rotated to enter reaction liquid to respectively perform testing of a plurality of samples. By changing the structure of the cover plate of the reaction tank, a plurality of working electrodes are mounted in place at one time, the circumferential uniform distribution mode of the working electrodes also ensures that each sample has the same test condition