Abstract
Electrolytic polishing of Aluminium and its alloys in AlCl3-LiAlH4-Et2O solution was studied.
Anodic polarization in the above bath was measured with pure Aluminium plate as an anode and pure Aluminium wire as a reference electrode. The current density-bath voltage relationship similar to the Jacquecurve was obtained in the same bath using Aluminium and its alloys as an anode.
Optimum conditions were established for the preparation of a bright surface of the Aluminium samples.
Aluminium electrodeposits with high lustre was obtained by the electrodeposition of Aluminium followed by the electropolishing in the AlCl3-LiAlH4-Et2O bath.
The condition under which metal specimens can be produced by electropolishing for the examination by electronmicroscopy was fixed.
The electropolishing was applied not only to pure Aluminium but also to Al-Cu, Al-Fe, Al-Cr, Al-Mn, Al-Si, Al-Ti, Al-Zr and Al-Mg alloys.
