Dr. Ivar Reimanis, George S. Ansell Professor and Chair in the Metallurgical and Materials Engineering Department at Colorado School of Mines in Golden, Colorado will give a seminar titled "Exsolution and Coarsening in Metal Oxide Systems" to the interested faculty and students at Discovery Park.

Abstract

Microstructure evolution in mixed metal oxides exposed to various redox conditions is important to understand for a variety of applications including in the energy sector, like for catalysts, solid oxide fuel cells, and solar thermal water splitting, as well as for structural ceramic-based composites. Interesting microstructures may be formed via exsolution and subsequent coarsening of metal particles in oxides and these phenomena are important to control in the context of the above applications. An overview of exsolution and coarsening of metallic nickel in yttria stabilized zirconia and yttria stabilized barium zirconate is provided. Highly oriented thin films of barium zirconate provide a useful model system to examine the importance crystal orientation has in these processes. Examples here demonstrate the rich variety of behavior and need to conduct fundamental studies.

Bio

Ivar Reimanis is the George S. Ansell Professor of Metallurgy and Department Head in the Metallurgical and Materials Engineering Department at Colorado School of Mines in Golden, Colorado. He earned a BS in Materials Science and Engineering at Cornell University in 1984 and a MS in Materials Science and Mineral Engineering at University of California, Berkeley. In 1986 he worked at IBM in Yorktown Heights. He earned a PhD in Materials at the University of California, Santa Barbara in 1990. Dr. Reimanis spent a year under a Max Planck Institute postdoctoral fellowship in Stuttgart, Germany. He worked as a postdoc at Los Alamos National Laboratory after which he served as a technical staff member until 1994 when he joined the Colorado School of Mines. He spent a sabbatical at the University of Western Australia in Perth in 2002 as a Gledden Visiting Senior Fellow and in 2007 was awarded a United States Fulbright award to spend a semester at the Indian Institute of Science in Bangalore. Dr. Reimanis is a Fellow of the American Ceramic Society, and he has served on ACerS Board of Directors and has volunteered in numerous other activities within ACerS. He is a member of the World Academy of Ceramics. Dr. Reimanis' research is largely in the area of ceramics, with a focus on mechanical behavior. He has also worked extensively in the area of ceramic processing.