Characteristic Evaluation of Corrosion of Aluminum-based Rigid Conductor Line

Aluminum-based rigid conductor lines have been widely installed in tunnel sections due to a cost-saving factor and their lightweight structure. Aluminum, however, is easily corroded, it is therefore important to understand the corrosive characteristics of aluminum under the practical environment. The authors carried out an accelerated corrosion test with alkali water and saltwater spraying tests to measure the material characteristics of corrosion. The results of these tests are described in this paper, and the authors have indicated the predicted lifetime of aluminum based under the various environments.