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

    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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