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US 2006/0137990 A1Published application
Method for electrolytic coating of materials with aluminum, magnesium or aluminum and magnesium alloys
AssigneeAluminal Oberflachentechnik GmbH & Co. KG
InventorsJorg Heller, Hans Vries, Matthias Hartel
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Abstract
The invention concerns a method for electrolytic coating of materials with aluminum, magnesium or aluminum and magnesium alloys. Said method is characterized in that the material is pretreated by being immersed in an electrolytic solution, where it is anodized, the electrolytic coating being performed immediately after in the same electrolytic solution.
Claims18
A method for electrolytic coating of a material with aluminum, magnesium or alloys of aluminum and magnesium, said method comprising
- immersing the material in an electrolytic bath comprising electrolyte for pretreatment, wherein said material is connected as anode therein, and
- performing electrolytic coating in the same electrolyte immediately thereafter, the electrolytic bath comprising organoaluminum compounds of general formulas (I) and (II)
- M[(R1)3Al—(H—Al(R2)2)n—R3] (I)
- Al(R4)3 (II)
- as electrolyte, wherein n is equal to 0 or 1, M is sodium or potassium, and R1, R2, R3, R4 can be the same or different, R1, R2, R3, R4 being a C1-C4 alkyl group, and a halogen-free, aprotic solvent being used as solvent for the electrolyte.
2 more elements
Dependencies are inferred from the claim text.