Publicação: Synthesis and sintering of ultra fine NaNbO3 powder by use of polymeric precursors
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Data
1996-09-01
Orientador
Coorientador
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Curso de graduação
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Resumo
Ultra-fine NaNbO3 powder was prepared by the use of polymeric precursors. X-ray diffraction (XRD) results showed that this niobate nucleates from the amorphous precursor, with no intermediate phases, at low temperature (500°C). Studies by XRD and nitrogen adsorption/desorption showed that powders with high crystallinity ( ≈ 100%) and high surface areas (>20 m2/g) are obtained after calcination at 700°C for 5 h. Compacts of calcined powders showed high sinterability reaching 98% of theoretical density when sintered at 1190°C for 3 h.
Descrição
Palavras-chave
Antiferroelectric, High density compacts, NaNbO3, Polymeric precursors, Powder, Sodium niobate, Synthesis, Adsorption, Amorphous materials, Calcination, Crystal structure, Nucleation, Polymers, Powders, Sintering, Synthesis (chemical), X ray diffraction analysis, Crystallinity, Theoretical density, Sodium compounds
Idioma
Inglês
Como citar
Materials Letters, v. 28, n. 1-3, p. 215-220, 1996.
