Hydrophilic coatings for aluminum

Details Hydrophilic coatings for aluminum Hydrophilic coatings for aluminum

1993-10-15

1995-08-15

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C23C 2244

Patent

active

054415802

ABSTRACT:
A chromium-free conversion coating for aluminum finstock includes zirconium, fluoride and potassium ions. The coating is preferably at a pH below about 2.0, and may optionally include polyphosphates, tannin, boron and zinc. A sequestering agent to complex dissolved iron, and a crystal deformation agent such as ATMP are also preferably included.

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