Elastic modulus and hardness of CaTiO3, CaCu3Ti4O12 and CaTiO3/CaCu3Ti4O12 mixture |
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| Authors: | MA Ramírez MM Reboredo MS Castro |
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| Affiliation: | a Chemistry Institute of São Paulo State University (UNESP), R. Francisco Degni, s/n Bairro Quitandinha (14800-900), Araraquara, Brazil
b Institute of Research in Material Science and Technology (INTEMA), CONICET — University of Mar del Plata, Juan B Justo 4302, B7608FDQ, Mar del Plata, Argentina |
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| Abstract: | Three ceramic systems, CaTiO3 (CTO), CaCu3Ti4O12 (CCTO) and intermediate nonstoichiometric CaTiO3/CaCu3Ti4O12 mixtures (CTO.CCTO), were investigated and characterized. The ceramics were sintered at 1100 °C for 180 min. 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 = 256 GPa, hardness = 10.6 GPa), while CTO/CCTO mixture showed intermediate properties between CTO and CCTO. |
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| Keywords: | CaTiO3 CaCu3Ti4O12 Elastic modulus Hardness Nanoindenter |
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