SUPERPRIMER: CHROMATE FREE COATING SYSTEM FOR DoD APPLICATIONS
T. Mugada · OhioLink ETD Center (Ohio Library and Information Network) · 2006
The idea of this research topic was to develop a novel, environmentally benign coating system for metal alloy structural components in DoD systems.The coating was chromate-free and contained little or no volatile organic compounds (VOC's).The integrated organosilane system replaced the chromate system entirely including all chromate pretreatment and all corrosion-inhibiting chromate pigments.The complete system and also most or all of its components were waterborne.The term used to denote this particular primer is "superprimer."This primer was based on organofunctional silanes that possess an extraordinary ability to protect metals against corrosion.The proposed work integrated organosilanes into a full water-borne coating system.The objective was to replace the current system (metal pretreatment, primer and topcoat) with no sacrifice of corrosion performance.Chapter 1 gives a brief overview on important concepts including corrosion and its control, significance of chromium in corrosion control and its use, silane technology, idea of the superprimer and the objective of this thesis.Chapter 2 gives information about the materials used for preparation of the superprimer.Procedures used for the testing and preparation of the superprimer are discussed.