Research sponsored by the U.S. Department of Energy, Assistant Secretary for Energy Efficiency and Renewable Energy, Office of Vehicle Technologies, as part of the Propulsion Materials Program, under contract DE-AC05-00OR22725 with UT-Battelle, LLC. A portion of this research was conducted at the SHaRE User Facility, which is sponsored by the Division of Scientific User Facilities, Office of Basic Energy Sciences, U.S. Department of Energy. Most of the equipment and instrumentation utilized during this investigation was acquired and maintained by the Oak Ridge National Laboratory's High Temperature Materials Laboratory User Program, which is sponsored by the U. S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program.
The Thermal Expansion, Elastic and Fracture Properties of Porous Cordierite at Elevated Temperatures
Article first published online: 13 MAR 2012
Published 2012. This article is a U.S. Government work and is in the public domain in the USA.
Journal of the American Ceramic Society
Volume 95, Issue 5, pages 1682–1691, May 2012
How to Cite
Shyam, A., Lara-Curzio, E., Pandey, A., Watkins, T. R., More, K. L. (2012), The Thermal Expansion, Elastic and Fracture Properties of Porous Cordierite at Elevated Temperatures. Journal of the American Ceramic Society, 95: 1682–1691. doi: 10.1111/j.1551-2916.2012.05125.x
Fellow, The American Ceramic Society.
- Issue published online: 9 MAY 2012
- Article first published online: 13 MAR 2012
- Manuscript Accepted: 24 JAN 2012
- Manuscript Received: 18 JUL 2011
- U.S. Department of Energy
- Assistant Secretary for Energy Efficiency and Renewable Energy
- Office of Vehicle Technologies. Grant Number: DE-AC05-00OR22725
The properties that determine the thermal shock resistance in materials are reported for porous cordierite, a leading candidate material for the fabrication of diesel particulate filters. Fracture toughness and slow crack growth tests were performed on test specimens obtained from the walls of diesel particulate filter monolithic substrates using the double-torsion test method at temperatures between 20°C and 900°C. The thermal expansion and elastic properties were characterized between 20°C and 1000°C. The role of the microstructure of porous cordierite in determining its unusual thermal expansion and elevated temperature Young's modulus and fracture toughness are discussed.