New Approaches to Aluminum Passivation for Corrosion Prevention
Abstract
A new method for producing an aluminum oxide film on an aluminum surface has been discovered. This method involves the activation of adsorbed H2O molecules by the attachment of low energy electrons-producing OH radicals which are aggressive oxidizing agents. Al2 O3 film thickness of up to 25 A are easily achieved. Al2 O3 films made this way are excellent for corrosion passivation as measured electrochemically, and the artificially produced films exhibit a factor of 15-20 x higher impedance than thermally-grown Al2O3 films of the same thickness. In addition the stability of two aluminum corrosion inhibitor molecules on Al2O3 has been separately investigated using FTIR spectroscopy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1998
- Accession Number
- ADA353996
Entities
People
- John Yates
Organizations
- University of Pittsburgh