The influence of the nature of the surface oxide on the adhesive fracture energy of alluminium bonded joints as measured by T-peel tests

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Abstract

Modification of aluminium alloy substrates microstructure and morphology by depositing new oxide layers on top of the metal surfacehas been investigated, with the aim of improving adhesion. The effect of treating the metal with boiling water or immersing it in a ceratebath has been studied by means of electron microscopy, contact angle measurements and peeling tests. The formation of pseudoboehmitelayers or cerium conversion coatings both led to an increase in joint’s adhesive fracture energy and more durable adhesive bonds withrespect to joints obtained with ‘‘mechanically grinded only’’ substrates. Differences in the performance of the bonded joints has beendiscussed in terms of the possible formation of different microstructured interphases.
Original languageEnglish
Pages (from-to)211-221
Number of pages10
JournalInternational Journal of Adhesion and Adhesives
Volume28
Publication statusPublished - 2008

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • General Chemical Engineering
  • Polymers and Plastics

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