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Elastic modulus and hardness of CaTiO 3, CaCu 3Ti 4O 12 and CaTiO 3/CaCu 3Ti 4O 12 mixture

Elastic modulus and hardness of CaTiO 3, CaCu 3Ti 4O 12 and CaTiO 3/CaCu 3Ti 4O 12 mixture,10.1016/j.matlet.2010.02.058,Materials Letters,M. A. Ramíre

Elastic modulus and hardness of CaTiO 3, CaCu 3Ti 4O 12 and CaTiO 3/CaCu 3Ti 4O 12 mixture  
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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 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.
Journal: Materials Letters - MATER LETT , vol. 64, no. 10, pp. 1226-1228, 2010
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