Luster-On
Aluminescent is a trivalent chromium conversion
coating for aluminum alloys which produces
clear, slightly iridescent films while forming a
protective surface with low electrical resistance.
Luster-On Aluminescent utilizes a patented process
licensed from the U.S. Navy under U.S. Patents
6,375,726; 6,511,532; 6,521,029; 6,527,841
Aluminescent
is a powdered product used to form a non-hexavalent
conversion coating on aluminum surfaces. The process
provides excellent corrosion protection at low cost
and forms a base for paint, lacquer, or rubber
bonding. The coating can be applied by dip, spray,
brush, swab, or roll coating, requires no electric
current, cooling or exhaust.
Aluminescent
is suitable for both wrought and cast aluminum
alloys and is designed for ease of operation with
minimum control.
Conversion
coatings generated by Aluminescent are compliant
with European RoHS and ELV directives and meet or
exceed the requirements of Mil-C-5541, Type II,
Class 1A and Class 3.
- Concentration: 1
to 2 oz/gal
- pH: 3.5 to 4.0
- Temperature: 70
to 80 °F.
- Time: 3 to 5
minutes.
Aluminescent
solutions are prepared by dissolving the desired
quantity of Aluminescent in warm water with
stirring. When completely dissolved, assure that the
pH of the solution is in the required range.
The pH of the working
solution is a function of the concentration of
Aluminescent, and the level of dissolved aluminum in
the bath. The pH of the solution should be in the
range of 3.5 to 4.0. A solution of 10% sulfuric acid
may be used to lower the pH, and a solution of 10%
by weight potassium hydroxide should be used to
raise the pH. The preferred operating temperature is
70 – 80ºF, but higher temperatures may be used to
change immersion times. Immersion time may be varied
between 1 and 5 minutes depending on the alloy being
processed.
Typical Cycle
- Dev-Kleen N-2, 3
to 8%, 90 to 100 °F, 3 to 6 min.
- Rinse.
- Deveco Non-Cr Al
Deoxidizer 5 to 15% Room Temp. 1 to 3 min.
- Rinse.
- Aluminescent 1
to 2 oz/gal 70 to 80 °F 3 to 5 min.
- Rinse.
- Warm Water Rinse
(160°F Max).
- Dry.
Description
