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.
|Numero di pagine||10|
|Rivista||International Journal of Adhesion and Adhesives|
|Stato di pubblicazione||Published - 2008|
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