Study of Corrosion Species and Inhibitors on Aluminum by Inelastic Electron Tunneling Spectroscopy.
Abstract
The technique of Inelastic Electron Tunneling Spectroscopy (IETS) has been applied to the study of corrosion and inhibition of corrosion of aluminum in the presence of organics. IETS spectra were measured and analyzed to obtain information on the intermediate and final corrosion species formed during the reaction of several chlorinated hydrocarbons with aluminum oxide surfaces. This information was coupled with previous corrosion and reaction results to develop reaction sequences and formulate corrosion mechanisms on a microscopic basis. Carbon tetrachloride and trichloroethylene were studied in detail. Studies on the inhibitor formamide provided information on the surface species formed, its orientation, and the types of sites with which it reacted. A comparison of experimental and theoretical intensities for formic acid adsorbed on aluminum was made in an attempt to make IETS a more quantitative tool for these kinds of studies. Model calculation for corrosion reaction mechanisms were also made and reported. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 04, 1980
- Accession Number
- ADA092998
Entities
People
- H. W. White
- T. Wolfram
Organizations
- University of Missouri