Our Anodising Expert strikes again!

DR J.C Avelar-Batista Wilson – Technical Manager BCW Treatments has yet another publication with publisher Elsevier.

Following the recent publication titled “Sample preparation of anodised aluminium oxide coatings for scanning electron microscopy” DR J.C Avelar-Batista Wilson has had her latest article published in the International Journal of Adhesion and Adhesives.  The publication titled “Tartaric acid cross-contamination in post-cascade rinses after sulphuric acid anodising (SAA): effect on adhesive bond strength of AA6060-T6 alloy,” was developed by the BCW Treatments Technical Manager and her team.  The research and development work was carried out using BCW Treatments Lab mini-line and took 2 months to complete.  Speaking to Dr J.C Avelar-Batista Wilson, “We were looking into the feasibility of simultaneously running two anodising processes (Sulphuric Acid Anodising (SAA) and a Tartaric Sulphuric Acid Anodising (TSA)) in the same commercial line which is currently set to run the SAA process for aluminium bonded structures. The TSA process could be an opportunity for business expansion as it is widely used by the aerospace industry. However, it was unknown whether tartaric acid contamination (due to communal cascade rinses prior to the final stage of hydrothermal sealing) would have any detrimental effect on the adhesive bond strength of SAA-processed parts. The investigation was carried out to determine whether it would be feasible to introduce the TSA process in our current SAA commercial line without compromising the adhesive bond strength of SAA-processed parts for the automotive industry.”

Here is the abstract of the publication:


The commercial feasibility of simultaneously running sulphuric acid anodising (SAA) and tartaric-sulphuric acid anodising (TSA) processes in the same anodising line was evaluated. Tartaric acid cross-contamination in communal cascade rinses after SAA or TSA processes may affect the adhesive bond strength of SAA-processed aluminium alloys for the automotive industry. In order to assess the commercial feasibility of running both SAA and TSA processes in the same anodising line, tartaric acid was introduced to post-SAA anodising rinse tanks (3 cascade rinses in total) prior to hydrothermal sealing. The adhesive bond strength of anodised AA6060-T6 coupons was evaluated by single-lap-joint tests in tension loading. Results indicated that tartaric-acid crosscontamination in post-SAA anodising rinses did not adversely affect the lap-shear strength of adhesively bonded AA-6060-T6 coupons, suggesting that both SAA and TSA processes could be potentially run in the same commercial anodising line by adding an extra tank for the TSA process followed by three communal cascade rinses prior to final hydrothermal sealing.

For the full Article follow the link:


By | 2017-12-13T12:27:36+00:00 December 13th, 2017|News|0 Comments