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Journal of Materials Science

, Volume 31, Issue 10, pp 2623–2629 | Cite as

Investigation of the hydration and dehydration of aluminium oxide-hydroxide using high frequency dielectric measurements between 300 kHz-3 GHz

  • R. A. Pethrick
  • D. Hayward
  • K. Jeffrey
  • S. Affrossman
  • P. Wilford
Papers

Abstract

Aluminium oxide exists in several forms which on addition of water give a complex range of oxide-hydroxide; boehmite, bayerite and gibbsite. High frequency dielectric measurements {300 kHz-3 GHz} are reported on the hydrated and dehydration of certain of these oxide-hydroxides. The amplitude of the observed dielectric relaxation correlates approximately with the water content, however anomalies can be observed during dehydration due to the retention of water in an immobilized form within the oxide matrix which highlights complexities in their structure and properties. These data indicate the potential of the dielectric method for quantification of the degree of hydration of an oxide in adhesive bonded structures. Two silane coupled alumina samples were studied to simulate the interface generated in the pre-treatment of real adhesive bonded structures.

Keywords

Oxide Polymer Aluminium Hydration Silane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • R. A. Pethrick
    • 1
  • D. Hayward
    • 1
  • K. Jeffrey
    • 1
  • S. Affrossman
    • 1
  • P. Wilford
    • 2
  1. 1.Department of Pure and Applied ChemistryUniversity of StrathclydeGlasgowUK
  2. 2.Royal Aerospace Establishment, Materials DivisionFarnboroughUK

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