Elastic modulus and hardness of CaTiO3, CaCu3Ti4O12 and CaTiO3/CaCu3Ti4O12 mixture期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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

Authors:	M.A. Ramí rez,M.M. Reboredo,M.S. Castro

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

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.

Keywords:	CaTiO₃ CaCu₃Ti₄O₁₂ Elastic modulus Hardness Nanoindenter
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