Accession Number:

ADA102339

Title:

Corrosion of Magnesium at High Anodic Potentials.

Descriptive Note:

Interim technical rept. Apr 80-Jun 81,

Corporate Author:

ELECTROCHEMICAL TECHNOLOGY CORP SEATTLE WA

Personal Author(s):

Report Date:

1981-07-01

Pagination or Media Count:

15.0

Abstract:

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

Subject Categories:

  • Physical Chemistry
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE