Device for the electrodeposition of aluminium or aluminium...

C - Chemistry – Metallurgy – 25 – D

Patent

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Details

C25D 17/20 (2006.01) C25D 17/00 (2006.01) C25D 17/06 (2006.01) C25D 17/16 (2006.01)

Patent

CA 2454075

The invention relates to a device for the electrodeposition of aluminium and/or aluminium alloys from organometallic electrolytes containing an aluminium alkyl complex, on materials to be coated. Said device comprises a support frame with a trestle and transport recesses, at least one electroplating drum, at least one drive unit for said electroplating drum and one or more support arms for the drum. The device is characterised in that the drive unit (3) is located in an encapsulated gas-tight housing, the electroplating drum (13) has a perforated internal tube (15), which is arranged along the longitudinal axis of the drum and is open at the side, whereby the lateral openings are located directly opposite the electrolyte supply in the electrolyte container and that the electroplating drum (13) consists of a material, which is stable both in aqueous and in organometallic electrolytes at temperatures of up to 110 ~C.

Dispositif de séparation galvanique de l'aluminium et/ou d'alliages d'aluminium à partir d'électrolytes organométalliques renfermant des complexes d'alkyl-aluminium, sur des matériaux à revêtir, comprenant un cadre porteur présentant un chevalet d'appui et des logements de transport, au moins un tambour de galvanisation, au moins une unité d'entraînement dudit tambour, et un ou plusieurs bras supports de ce tambour, caractérisé en ce que l'unité d'entraînement (3) est disposée dans une enceinte étanche au gaz, le tambour de galvanisation (13) présente un tube intérieur perforé (15), disposé le long de son axe longitudinal et ouvert latéralement, en ce que les ouvertures latérales sont disposées directement à l'opposé de l'alimentation en électrolyte dans le récipient d'électrolyte, et en ce que le tambour de galvanisation (13) est constitué par un matériau qui est résistant à des électrolytes aussi bien aqueux qu'organométalliques, à des températures pouvant atteindre 110 ·C.

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