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What surface pre-treatment should I use for adhesively bonding aluminium alloys?

Frequently Asked Questions

There are several recommended methods of surface preparation for aluminium alloys. The main ones are:

  • Mechanical methods such as abrasion or grit blasting
  • Chemical methods such as controlled solvent cleaning or controlled alkaline etching, surface functionalisation
  • Electrolytic methods such as chromic/sulphuric acid or phosphoric acid anodising
  • Oxidative radiation cleaning such as plasma cleaning
  • Primer coatings for surface stabilisation

The most appropriate choice of process (or combination of processes) is dictated by the end-application and the grade of material.

Further information

For a description of pre-treatment processes for aluminium alloys please refer to:

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