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US 2021/0262107 A1Published application
Process for treating the surface of a part made of aluminium or aluminium alloy or of magnesium or magnesium alloy
AssigneeLiebhrr-Aerospace Toulouse SAS
InventorsClaude ROSSIGNOL, Nadia VIALAS
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Abstract
The invention relates to a method for the surface treatment of a part made from aluminum or aluminum alloy or from magnesium or magnesium alloy, comprising a step of treatment by oxidation of said part and a step of applying an aqueous composition to the surface of said part.
Claims14
A method for the surface treatment of a part made from aluminum or aluminum alloy or from magnesium or magnesium alloy, the method comprising:
- oxidation treating said part;
- and,
- applying, to the surface of said part, an aqueous composition free of chromium, the aqueous composition containing:
- fluorozirconate ions,
- molybdate ions,
- and at least one component selected from lithium ions and permanganate ions.
3 more elements
A part made from aluminum or aluminum alloy or from magnesium or magnesium alloy obtained by a surface treatment comprising:
- oxidation treating said part;
- and,
- applying, to the surface of said part, an aqueous composition free of chromium, the aqueous composition containing:
- fluorozirconate ions,
- molybdate ions,
- and at least one component selected from lithium ions and
- permanganate ions.
4 more elements
Dependencies are inferred from the claim text.