Síntese e caracterização da cerâmica BNO (BiNbO4) adicionada com 3% de ZnO

• Autor(a) principal: Sales, Antônio Jefferson Mangueira
• Data de Publicação: 2012
• Outros Autores: Pires Júnior, Guilherme Francisco de Morais, Rodrigues, Herbert de Oliveira, Sales, Juscelino Chaves, Sousa, Djalma Gomes de, 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/55916
• topic: Método convencional cerâmico; Difração de raios - X; Cerâmica BNO (BiNbO4)

This work describes the synthesis and study of the structural characterization of ceramic BiNbO4 and density behavior when added 3% by weight of ZnO with a view to use in capacitors. The manufacture of BiNbO4 was made by conventional ceramic method. The powders were milled for two hours, calcined at 850 ° C for 3 h and characterized by XRD with Diffractometer Rigaku DMAXB of Co- radiation. A more detailed XRD characterization was performed with the program DBWS9807a using the Rietveld refinement of crystal structures, which confirmed the achievement of phase -BiNbO4. Were made "buks" with the calcined powder and these were sintered at 1025 ° C. In order to study the grain morphology and distribution of pores in the ceramic body, the surface of the sample with addition of 3% by weight of ZnO was analyzed by Scanning Electron Microscopy which confirmed a better densification.