The Thermal Expansion, Elastic and Fracture Properties of Porous Cordierite at Elevated Temperatures

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1551-2916.2012.05125.x· OSTI ID:1049772

Shyam, Amit ^[1]; Lara-Curzio, Edgar ^[1]; Pandey, Amit ^[1]; Watkins, Thomas R ^[1]; More, Karren ^[2]

---

1. ORNL
2. Oak Ridge National Laboratory (ORNL)

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.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1049772
• Journal Information: Journal of the American Ceramic Society, Vol. 95, Issue 5; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRACK PROPAGATION
ELASTICITY
FABRICATION
FRACTURE PROPERTIES
MICROSTRUCTURE
PARTICULATES
SUBSTRATES
THERMAL EXPANSION
THERMAL SHOCK