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Programa Preliminar - Ebrats 2012

EVALUATION OF THE SINTERABILITY OF COPPER-SUBSTITUTED FERRITES BY MEANS OF DILATOMETRIC THERMAL ANALYSIS

Referencia Apresentador Resumo Confirmado
14-003
Vera Lúcia Othéro de Brito Cobalt and nickel ferrites have magnetostrictive properties suitable for application in magneto-electric and magneto-mechanical transducers. Sintering of these materials in temperatures below 1000 oC is required in fabrication of SMD devices.. Dilatometric thermal analyses were made in copper-substituted Co, Co-Mn and Ni-Co ferrites in order to verify the influence of copper in the sinterability of these ferrites. It was verified that copper influences the kinetics of the spinel formation. The results indicated that the copper substitution allows a reduction of the sintering temperature but a densification higher than 90%, with sintering below 1000 oC, was possible only in the Ni-Co ferrite. SIM
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