Title

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

Authors

Authors

N. Orlovskaya; M. Lugovy; S. Pathak; D. Steinmetz; J. Lloyd; L. Fegely; M. Radovic; E. A. Payzant; E. Lara-Curzio; L. F. Allard;J. Kuebler

Comments

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Abbreviated Journal Title

J. Power Sources

Keywords

perovskite; strength; fracture toughness; thermal expansion; Young's; modulus; STRESS-STRAIN BEHAVIOR; PHASE-TRANSITION; FERROELASTIC BEHAVIOR; FRACTURE-TOUGHNESS; SPIN-STATE; CERAMICS; EXPANSION; DIFFRACTION; COMPOSITES; Electrochemistry; Energy & Fuels

Abstract

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. (C) 2008 Elsevier B.V. All rights reserved.

Journal Title

Journal of Power Sources

Volume

182

Issue/Number

1

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

230

Last Page

239

WOS Identifier

WOS:000257642500029

ISSN

0378-7753

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