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Strategies for the replacement of chromic acid anodising for the structural bonding of aluminium alloys

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posted on 2006-02-13, 11:11 authored by Gary Critchlow, Keith YendallKeith Yendall, D. Bahrani, A. Quinn, F. Andrews
The 40/50V Bengough-Stuart chromic acid anodise process is widely used in demanding applications as a prebond treatment. This process has a number of disadvantages and its replacement is the subject of much interest in the aerospace, automotive and defence sectors, amongst others. This paper details a number of modifications to the standard boric-sulphuric acid anodising (BSAA) process specifically to achieve satisfactory structural bond performance. These included: variations in the deoxidiser and anodising parameters, and; the use of a post anodising dip. It has been demonstrated in these studies that there are three possible methods of providing excellent durability using a variation of the standard BSAA process: the use of an electrolytic phosphoric acid deoxidiser (EPAD); a high temperature anodise at 35°C, and; the use of a post anodise phosphoric acid dip (PAD).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Pages

5921740 bytes

Citation

CRITCHLOW, G.W. ... et al, 2006. Strategies for the replacement of chromic acid anodising for the structural bonding of aluminium alloys. International Journal of Adhesion and Adhesives, 26(6), pp. 419-453

Publisher

© Elsevier

Publication date

2006

Notes

This article was published in the journal, International Journal of Adhesion and Adhesives [© Elsevier]. The definitive version is available at: http://www.elsevier.com/locate/ijadhadh

ISSN

0143-7496

Language

  • en

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