Trivalent chromium-containing composition for use in corrosion resistant coatings on metal surfaces
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United States of America Patent
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Nov 8, 2016
Grant Date -
Jun 3, 2010
app pub date -
May 10, 2007
filing date -
May 10, 2006
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Abstract
A low sludge trivalent chromium based conversion coating bath is provided which forms corrosion resistant coatings on aluminum and aluminum alloys by immersion in aqueous solutions containing trivalent chromium ions and fluorometallate ions followed by optional rinsing. Trivalent chromium coated aluminum also serves as an effective base for paint primers.
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