Thermal and mechanical properties of LaCoO3 and La0.8Ca0.2CoO3 perovskites

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2008.03.072· OSTI ID:935737

Orlovskaya, Nina ^[1]; Lugovy, Mykola ^[1]; Pathak, Siddhartha ^[2]; Steinmetz, David ^[2]; Lloyd, John ^[2]; Fegely, Laura C ^[2]; Radovic, Miladin ^[3]; Payzant, E Andrew ^[3]; Lara-Curzio, Edgar ^[3]; Allard, Jr, Lawrence Frederick ^[3]; Kuebler, Jakob ^[4]

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1. University of Central Florida
2. Drexel University
3. ORNL
4. EMPA, Laboratory for High Performance Ceramics, Duebendorf, Switzerland

In this work, the thermal and mechanical properties, such as coefficient of thermal expansion, strength, Young s modulus and fracture toughness of LaCoO3 and La0.8Ca0.2CoO3 perovskites have been studied, as well as slow crack growth of La0.8Ca0.2CoO3. The mechanical performance of the two cobaltites have been evaluated in terms of their ferroelastic hysteresis properties such as non-symmetry in bending of both stress and strain distributions, non-linear deformation upon applied load from the arbitrary low stresses, and ferroelastic toughening.

• Research Organization: Oak Ridge National Laboratory (ORNL); High Temperature Materials Laboratory
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 935737
• Journal Information: Journal of Power Sources, Journal Name: Journal of Power Sources Journal Issue: 1 Vol. 182; ISSN JPSODZ; ISSN 0378-7753
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM OXIDES
COBALT OXIDES
CRACK PROPAGATION
FRACTURE PROPERTIES
LANTHANUM OXIDES
MECHANICAL PROPERTIES
PERFORMANCE
PEROVSKITES
SOFC
THERMAL EXPANSION
THERMODYNAMIC PROPERTIES
YOUNG MODULUS
perovskite