NON CHROMATED CORROSION INHIBITORS FOR ADHESIVE BONDING AND PAINTING PROCESSES

THE USE OF TOXIC CHEMICALS DERIVED FROM METALS SUCH AS STRONTIUM, CALCIUM AND LEAD AS ANTI-CORROSIVES IN PAINT AND ADHESIVE BOND PRIMERS FOR ALUMINUN ALLOYS IS A WELL ESTABLISHED TECHNOLOGY. HOWEVER, USE OF CERTAIN TYPES OF "SURFACE ACTIVE AGENTS" SUCH AS ORGANO METALLIC COMPLEXES, QUATENARY CHELATING AGENTS AND GUANIDINES AND THEIR DERIVATIVES FOR CHEMICAL ANTICORROSION PURPOSES HAS REMAINED RELATIVELY UNEXPLORED. THIS PAPER DISCUSSES THE FEASIBILITY OF USING SUCH "SURFACE ACTIVE AGENTS" AS CORROSION INHIBITORS FOR USE IN PAINT AND ADHESIVE BOND PRIMERS TO PROTECT ALUMINUM AND ALUMINUM ALLOYS. THE PAPER ALSO DISCUSSES THE MATERIAL PROPERTY REQUIREMENTS , MATERIAL SELECTION CRITERIA, COATING SYSTEM FORMULATIONS AND FORMULATION PROCESSES; WE WILL ALSO DISCUSS PROOF OF CONCEPT TESTING, SUCH AS SALT (FOG) SPRAY AND HUMIDITY AGING TESTS PER STANDARD ASTM (AMERICAN SOCIETY OF TESTING MATERIAL) METHODS. FUTURE RESEARCH AND DEVELOPMENT EFFORTS AS WELL AS DIRECTIONS IN OPTIMIZING THE CORROSION-INHIBITING ADDITIVE PACKAGES ARE SUGGESTED.