Corrosion of Magnesium at High Anodic Potentials.
Interim technical rept. Apr 80-Jun 81,
ELECTROCHEMICAL TECHNOLOGY CORP SEATTLE WA
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During the pitting of magnesium and other metals in halide solutions, a film of halide salt of the metal forms on the corroding surface. This salt film plays a major role as a diffusion barrier for water and prevents repassivation by oxide. Properties of magnesium chloride layers were determined on corroding high-purity magnesium shielded electrodes or one-dimensional pits. Electrical transient experiments showed that the salt film thickness is proportional to applied anodic potential and that conduction is by the high field mechanism. Water diffusion rate decreases with film thickness. Author
- Physical Chemistry
- Properties of Metals and Alloys