The use of non ferrous metals (brass and copper) as a magical Talisman to ward off evil or to counteract the 'unclean' iron/steel is indeed interesting.
Aluminium found its way into many African cultures in the early 20C. Was this metal seen in the same light.... I wonder.
Logically, the answer is surely yes, its silvery colour, its corrosion resistance and its workability must have made an impact.
I have never seen a Takouba with aluminium covered hilts or handles, but I have seen examples of weapons both ceremonial and 'useable' that are adorned or embellished with aluminium.