Análises térmicas e processo de sinterização da cerâmica KSr2Nb5O15 dopada com CuO
Carregando...
Data
2009-01-01
Autores
Vieira, Delia do Carmo [UNESP]
Cardoso, Celso Xavier [UNESP]
Duran, Rafael Matos
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
KSr2Nb5O15 is a ferroelectric material. The sintering process of the KSr2Nb5O15 ceramic doped with different amounts of CuO was investigated in this research. It was found that CuO is effective as promoter of the densification process of the KSN ceramic. The developed microstructures were different due to the amount of CuO and secondary phases were observed in the microstructures. However, the results of X - ray diffraction showed that only the tetragonal tungsten bronze (TTB) structure was identified in all the investigated ceramic systems. The thermal behavior of CuO and also of the CuO - KSN phase mixture was investigated by thermal analysis.
Descrição
Palavras-chave
TTB niobates, thermal analysis, liquid phase sintering
Como citar
Química Nova. Sociedade Brasileira de Química, v. 32, n. 7, p. 1704-1709, 2009.