Premium
The Thermal Expansion, Elastic and Fracture Properties of Porous Cordierite at Elevated Temperatures
Author(s) -
Shyam Amit,
LaraCurzio Edgar,
Pandey Amit,
Watkins Thomas R.,
More Karren L.
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05125.x
Subject(s) - thermal shock , materials science , cordierite , composite material , fracture toughness , thermal expansion , microstructure , porosity , elastic modulus , ceramic
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.