Citation:
U. Bardi, S. Caporali, M. Craig, A. Giorgetti, I. Perissi, J.R. Nicholls, Electrodeposition of aluminium film on P90 Li-Al alloy as protective coating against corrosion, Surface and Coatings Technology, Volume 203, Issues 10-11, 25 February 2009, Pages 1373-1378,
Abstract:
In this paper we report on the electrodeposition of thin aluminium layers on P90
lithium–aluminium alloy at room temperature from a chloroaluminate ionic liquid
(1-butyl-3-methyl imidazolium heptachloroaluminate [BMIm]Al2Cl7). We found that
the treatment of the P90 sample's surface is a key point to obtain good quality
coatings. On freshly mechanically polished surfaces, thin (about 24 µm),
homogeneous and dense aluminium layers were obtained at 10 µm h− 1 deposition
rate. Finally, the corrosion resistance of the uncoated and Al-coated samples
was investigated by means of electrochemical techniques such as open-circuit
voltage curves, impedance spectroscopy and potentiodynamic polarization in 3.5
wt.% NaCl aqueous solution. We found that the protective aluminium layer
significantly reduces the corrosion rates of the P90 Li–A