Device for the electrodeposition of aluminum or aluminum alloys from organometallic electrolytes containing alkyl

Abstract

A device for the electrodeposition of aluminum and/or aluminum alloys from organometallic electrolytes containing alkylaluminum complexes on materials to be coated, said device consisting of a supporting frame with a stand and transportation bearings, at least one plating barrel, at least one drive unit for the plating barrel, and one or more holding arms for the plating barrel, characterized in that the drive unit ( 3 ) is arranged in an encapsulated gas-tight housing, the plating barrel ( 13 ) has a perforated inner tube ( 15 ) arranged along the longitudinal axis thereof and open at its side, so that, when placing the device in an electrolyte container, the lateral openings are arranged directly opposite the electrolyte feed in the electrolyte container, the plating barrel ( 13 ) consists of a material which is stable both in aqueous and organometallic electrolytes at temperatures up to 110° C.

1 . (canceled)  
     
     
         2 . (canceled)  
     
     
         3 . (canceled)  
     
     
         4 . (canceled)  
     
     
         5 . (canceled)  
     
     
         6 . (canceled)  
     
     
         7 . (canceled)  
     
     
         8 . (canceled)  
     
     
         9 . A device for the electrodeposition of aluminum and/or aluminum alloys from organometallic electrolytes comprising alkylaluminum complexes on materials to be coated, said device comprising of a supporting frame with a stand and transportation bearings, at least one plating barrel, at least one drive unit for the plating barrel, and one or more holding arms for the plating barrel, wherein 
 at least one drive unit is arranged in an encapsulated gas-tight housing,    the plating barrel comprises a perforated inner tube arranged along the longitudinal axis thereof having a side opening such that when placing the device in an electrolyte container, the side opening is arranged directly opposite an electrolyte feed in the electrolyte container, and    the plating barrel comprises a material which is stable both in aqueous and organometallic electrolytes at temperatures up to 110° C.    
     
     
         10 . The device according to  claim 9 , wherein the plating barrel comprises polyphenylene sulfide reinforced with at least 40 wt. % glass fiber.  
     
     
         11 . The device according to  claim 9 , wherein the drive unit is provided with an automatic purging and pressurizing device for inert gas.  
     
     
         12 . The device according to  claim 9 , wherein an auxiliary anode is arranged in the inner tube in order to increase the concentration of metal ions.  
     
     
         13 . The device according to  claim 9 , wherein the drive unit has a drive shaft which is conducted through the housing wall of the drive unit via a gas-tight shaft guide comprising polytetrafluoroethylene.  
     
     
         14 . The device according to  claim 9 , wherein the holding arms are hollow bodies made of steel, comprising a core of polyphenylene sulfide.  
     
     
         15 . The device according to  claim 9 , wherein the holding arms on the outside thereof are coated with a plastic layer of polyvinylidene fluoride or thermoplastic fluorocarbon based on ethylene and chlorotrifluoroethylene.  
     
     
         16 . The device according to  claim 14 , wherein the power supply bars for the electrolysis power supply are arranged in the core of polyphenylene sulfide.