Assessment of aluminium alloys anodised with tartaric sulphuric acid
AWE currently use chromic acid anodising for passivating aluminium alloys to provide corrosion protection for a range of applications across site. However, chromic acid contains hexavalent chromium which is restricted therefore, alternative chemicals are required that ensure aluminium alloys meet the process specifications.
Start date1 October 2021
3.5 years of stipend and fees paid. Stipend of £17,000 pa.
Funding sourceThe University of Surrey and AWE
AWE currently uses chromic acid anodising for passivating aluminium alloys to provide corrosion protection in a range of applications. Chromic acid anodising, however, gives rise to waste hexavalent chromium which is restricted under the European Union’s REACH Regulations. Alternative anodising treatments are therefore required.
This novel research programme is an evidence-based approach to develop anodised coatings that are fit for purpose in terms of key material properties, e.g. corrosion resistance, mechanical robustness, electrical breakdown voltage, coating adherence, and radiation hardness. The morphology and microstructure of the anodised layer will be analysed with various electron microscopy methods. Other techniques will be used to study the composition and surface chemistry of the coatings. The performance of the coatings will be assessed as a function of processing parameters, i.e. time, temperature, pH, and voltage. This experimental data will enable the coating performance to be related to the anodised layer’s microstructure and composition.
Related linksCentre for Doctoral Training in MiNMaT
The candidate will spend a lot of time with the sponsor who are based at Aldermaston.
Candidates must have a:
Physical Sciences degree. First Class or Upper Second minimum
Masters at merit or distinction
UK or EU students only. Please note we are not funded for international students. Additionally, the nature of this work relates to UK security so applicants are considered at the sponsor's discretion.
IELTS requirements : IELTS Level 6.5 or above
How to apply
CDT in MiNMaT within the Department of Mechanical Engineering Sciences