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Corrosion and mechanical performance of double-layered nano-Al/PCL coating on Mg-Ca-Bi alloy

Bakhsheshi-Rad, Hamid Reza and Hamzah, Esah and Abdul Kadir, Mohammed Rafiq and Daroonparvar, Mohammadreza and Medraj, M. (2015) Corrosion and mechanical performance of double-layered nano-Al/PCL coating on Mg-Ca-Bi alloy. Vacuum, 119 . pp. 95-98. ISSN 0042-207X

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Official URL: http://dx.doi.org/10.1016/j.vacuum.2015.04.039

Abstract

To improve corrosion resistance and reduce mechanical properties loss of Mg-Ca-Bi alloy, nano-aluminium (Al) and poly(e-caprolactone) (PCL) were prepared on a substrate of this alloy through physical vapour deposition (PVD) and dip coating techniques. The coating is composed of a thick outer interconnected pores PCL layer and a thin inner dense Al layer. The results showed that the compressive strength of nano-Al/PCL after immersion in NaCL solution is significantly higher than nano-Al coated samples but nano-Al showed better bonding strength of 25.6 MPa than that of nano-Al/PCL which was 8.1 MPa only. The results of electrochemical tests indicated that the bi-layered nano-Al/PCL coating dramatically increased the corrosion resistance of the Mg-Ca-Bi alloy.

Item Type:Article
Uncontrolled Keywords:composite coating, corrosion behaviour, mechanical properties, Mg alloy, PVD
Subjects:A General Works
ID Code:58175
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:06 Sep 2017 14:48

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