Preparação e caracterização de pós/filmes de PbTiO3 via método Pechini
Preparação e caracterização de pós/filmes de PbTiO3 via método Pechini

Preparação e caracterização de pós/filmes de PbTiO3 via método Pechini


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About the Book

O objetivo deste trabalho foi estudar o método Pechini como forma de obtenção de pós cerâmicos amorfos e filmes amorfos de titanato de chumbo. O titanato de chumbo, PbTiO3 (PT), é uma material que em sua fase amorfa apresenta propriedades fotoluminescentes . Além disso, o PT exibe várias propriedades úteis, como as propriedades dielétricas, piezoelétricas e eletromecânicas e as propriedades ferroelétricas. Estas propriedades atribuem a este material (PT) diversas aplicações. Na obtenção de PT, a influência do tratamento térmico e pH dos sóis foram investigados a fim de minimizar o aparecimento de fases secundárias no processo de obtenção da fase amorfa de PT. Sendo que os sóis de pH 10 que foram tratados termicamente por 10 horas em temperatura de 400oC apresentam-se através das técnicas de caracterização na fase amorfa de PT livres de fases intermediárias. Os pós de PT obtidos via método Pechini, foram caracterizados via análises térmicas, espectrofotometria no infravermelho, difração de raios X, enquanto que os filmes de PT obtidos pela técnica dip coating foram caracterizados por difração de raios x e por microscopia eletrônica de varredura.


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Product Details
  • ISBN-13: 9783639758672
  • Publisher: Novas Edicoes Academicas
  • Binding: Paperback
  • Language: Portuguese
  • Returnable: N
  • Spine Width: 7 mm
  • Width: 152 mm
  • ISBN-10: 3639758676
  • Publisher Date: 31 Mar 2015
  • Height: 229 mm
  • No of Pages: 112
  • Series Title: Portuguese
  • Weight: 227 gr


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