THE USE OF ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY TO PREDICT THE CORROSION OF ALUMINUM-LITHIUM ALLOYS IN MARINE ENVIRONMENTS

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Authors
  1. Lenard, D.R.
  2. Moores, J.G.
  3. Roberge, P.R.
  4. Halliop, E.
Corporate Authors
Defence Research Establishment Pacific, Victoria BC (CAN)
Abstract
In order to acquire some experience with the behaviour of aluminum-lithium alloys in the marine environment, the Defence Research Establishment Pacific compared panels made from Aluminum Alloy (AA) 2090 and 8090 sheet with the conventional alloys AA 7075 and 2024, respectively, in several tests involving long term exposure to sea water fog and full or partial immersion in sea water. The results of these tests were then compared with the results of a new technique, developed by the Royal Military College of Canada for the analysis of electrochemical impedance measurements, that was performed on these alloys in simulated sea water. The long term exposure tests indicated that corrosion problems could occur with aluminum-lithium alloys in the marine environment.
Report Number
AGARD-CP-565-PAP-8 — CONTAINED IN 95-01275
Date of publication
01 Jan 1995
Number of Pages
12
DSTKIM No
95-01259
CANDIS No
150275
Format(s):
Document Image stored on Optical Disk

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