Chromium-Free Conversion Coating

A chromium-free conversion coating is prepared by the addition of inorganic metallic salts and one or more silanes to dispersions of conducting polymers which are then exposed to alloys of aluminum or other metals. Advantageously, the performance of the coating is comparable to that of conventional...

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Main Authors ZUBILLAGA-ALCORTA OIHANA, LAPENA-REY NIEVES, COLOMA-MOZO PATRICIA SANTA, CANO-IRANZO FRANCISCO JESUS, IZAGIRRE-ETXEBERRIA UXOA
Format Patent
LanguageEnglish
Published 28.02.2013
Subjects
ADHESIVES
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
BASIC ELECTRIC ELEMENTS
CABLES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
CONDUCTORS
CORRECTING FLUIDS
DYES
ELECTRICITY
FILLING PASTES
INKS
INSULATORS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PERFORMING OPERATIONS
POLISHES
PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL
SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES
SPRAYING OR ATOMISING IN GENERAL
TRANSPORTING
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:A chromium-free conversion coating is prepared by the addition of inorganic metallic salts and one or more silanes to dispersions of conducting polymers which are then exposed to alloys of aluminum or other metals. Advantageously, the performance of the coating is comparable to that of conventional chromium-based methods for a number of aluminum alloys having particular significance in the manufacture of aircraft.
Bibliography:Application Number: US201213662412