Arockiasamy, P., G. Thenmozhi, and R. Jaya Santhi. 2014. “Corrosion Resistance and Microhardness of Double Layer Coatings of Aluminium Alloy”. The International Journal of Science & Technoledge 2 (13). http://internationaljournalcorner.com/index.php/theijst/article/view/128236.