An IETS (Inelastic Electron Tunneling Spectroscopy) Study of Surface Reactions Applicable to Adhesion.

Abstract

Inelastic electron tunneling spectroscopy (IETS) has been used to study two classes of adhesion promoting compounds adsorbed on alumina: trialkoxysilanes and phosphonic acids. It has been shown that both types of compounds can condense directly with hydroxyl groups on the surface. Condensation is through the alkoxy groups in the case of the silanes and through the hydroxyl groups in case of the acids. The silanes can further condense to form surface siloxanes. The absence of bands characteristic of the phosphoryl group in the spectra of the acids is indicative of resonance bond formation followed by ionic bonding to the surface. Keywords: Adhesion, Aluminum, Bonding, Coupling agents, Corrosion inhibitors, Phosphonic acids, Silanes, Spectroscopy, Surface reactions.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1988
Accession Number
ADA192274

Entities

People

  • Alan Neville Gent
  • J. D. Alexander
  • P. N. Henriksen
  • R. D. Ramsier

Organizations

  • University of Akron

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesion
  • Air Force
  • Aluminum Oxides
  • Biological Sciences
  • Chemical Compounds
  • Chemistry
  • Engineering
  • Fermi Levels
  • Materials
  • Materials Science
  • Metal Oxides
  • Military Research
  • Oxides
  • Phosphonic Acids
  • Physics
  • Surface Chemistry
  • Surface Reactions

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Organic Chemistry
  • Surface Coatings Technology.

Technology Areas

  • Microelectronics