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

 -  International Journal of Adhesion & Adhesives, 26(6), p.419-453, 2006 .
<br/><br/> 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; a high temperature anodise at 35 1C; and the use of a post-anodise phosphoric acid dip. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ALUMINIUM<br/>SURFACE TREATMENT BY CHEMICAL SOLUTIONS<br/>MICROSCOPY<br/>DURABILITY