Elastic modulus and hardness of CaTiO3, CaCu3Ti4O12 and CaTiO3/CaCu3Ti4O12 mixture

Three ceramic systems, CaTiO3 (CTO), CaCu3Ti4O12 (CCTO) and intermediate nonstoichiometric CaTiO3/CaCu3Ti4O12 mixtures (CTO.CCTO), were investigated and characterized. The ceramics were sintered at 1100A degree C for 180min. The surface morphology and structures were investigated by XRD and SEM. Ela...

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Bibliographic Details
Published in:Materials letters 2010-05, Vol.64 (10), p.1226-1228
Main Authors: Ramírez, M.A., Parra, R., Reboredo, M.M., Varela, J.A., Castro, M.S., Ramajo, L.
Format: Article
Language:English
Subjects:
CERAMICS
COPPER OXIDE
Elastic modulus
ELASTICITY
Hardness
Indentation
MECHANICAL PROPERTIES
Modulus of elasticity
PROPERTIES
Scanning electron microscopy
SINTERING
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Summary:Three ceramic systems, CaTiO3 (CTO), CaCu3Ti4O12 (CCTO) and intermediate nonstoichiometric CaTiO3/CaCu3Ti4O12 mixtures (CTO.CCTO), were investigated and characterized. The ceramics were sintered at 1100A degree C for 180min. The surface morphology and structures were investigated by XRD and SEM. Elastic modulus and hardness of the surfaces were studied by instrumented indentation. It was observed that CCTO presented the higher mechanical properties (E =256GPa, hardness=10.6GPa), while CTO/CCTO mixture showed intermediate properties between CTO and CCTO.
ISSN:0167-577X
DOI:10.1016/j.matlet.2010.02.058