SÍntese e caracterização da cerâmica BNO (BiNbO4) adicionada com 10% de CuO

• Autor(a) principal: Sales, Antônio Jefferson Mangueira
• Data de Publicação: 2012
• Outros Autores: Silva, Paulo Maria de Oliveira, Rodrigues Junior, Cauby Amorim, Sales, Juscelino Chaves, Silva, Marcelo Antonio Santos da, Sombra, Antônio Sérgio Bezerra
• Tipo de documento: Artigo de conferência
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/55915
• topic: Método convencional cerâmico; Difração de raios - X; Cerâmica BNO (BiNbO4)

The study of the synthesis and structural characterization of ceramic BiNbO4 and behavior of density when added 10% by weight of CuO, with a view to applications in ceramic capacitors, are presented in this work. The BiNbO4 was prepared by conventional ceramic method. The milled powders were calcined for 2 hours at 850 °C for 3 hours and characterized by using a diffractometer Rigaku DMAXB of Co- radiation. A more detailed characterization by XRD was performed using the program DBWS9807a using the Rietveld refinement of crystal structures, which confirmed the achievement of the -BNO phase with orthorhombic structure. Were produced buks with the calcined powder, they were sintered at 925 °C. In order to study the grain morphology and distribution of pores in the ceramic body, the surface of the sample by adding 10% of CuO was analyzed by Scanning Electron Microscopy which confirmed a better densification.