content includes papers on recent technical progress by national laboratories, universities and private industries on solid oxide fuel cell technology including sofc component materials, processing, cell/stack fabrication and design, electrochemical performance and stability, long-term chemical interactions, interface engineering, modeling, test procedures and performance analysis. papers from the american ceramic societys 31st international conference on advanced ceramics and composites, held in daytona beach, florida, january 21-26, 2007.