papers that comprise this book are taken from the 69th annual porcelain enamel institute technical forum which was held in nashville, tennessee in may 2007. organized and sponsored by the american ceramic society and the american ceramic societys engineering ceramics division in conjunction with the nuclear and environmental technology division. the porcelain enamel institute showcases and promotes innovations in materials and processing to improve the overall efficiency of enameling operations, encourages product use in all possible applications, and advances and protects the legitimate interests of the industry and its individual members. through an active committee structure with representation from all segments of the industry, pei is geared to provide valuable, timely programs and services to executives at many organizational levels.