Cleaning aluminium workpieces

Details Cleaning aluminium workpieces Cleaning aluminium workpieces

C - Chemistry, Metallurgy

25

F

C25F 1/04 (2006.01) C25D 5/44 (2006.01)

Patent

CA 2208109

A method of cleaning an Al workpiece comprises a.c. anodising the workpiece in an acidic electrolyte capable of dissolving aluminium oxide and maintained at a temperature of at least 70°C under conditions such that the surface of the workpiece is cleaned with any oxide film thereon being non-porous and no more than about 20 nm thick.

Procédé de nettoyage de pièces en Al qui consiste à anodiser ladite pièce dans un électrolyte acide capable de dissoudre l'oxyde d'aluminium et à la maintenir à une température d'au moins 70 DEG C dans des conditions telles que la surface de la pièce est nettoyée, tout film d'oxyde sur la pièce étant non poreux et n'ayant pas plus d'environ 20 nm d'épaisseur.

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