Investigation of the Pitting Potential of Rapidly Solidified Aluminum-Lithium Alloys

摘要

The free corrosion and pitting potential of lithium-containing Al-Cu-Mg alloys, produced by a rapid solidification technique, is investigated. Alloys containing 0, 0.8, and 3 wt percent Li respectively were used. The pitting potential was measured with the potentiostatic method and the quasi-stationary potentiokinetic method. Addition of lithium results in a decrease of the free corrosion potential. The pitting potential becomes more negative when lithium is added to the alloy.