Low-temperature aqueous preparation of barium metatitanate powders (Articolo in rivista)

Type
Label
  • Low-temperature aqueous preparation of barium metatitanate powders (Articolo in rivista) (literal)
Anno
  • 1994-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/0955-2219(94)90048-5 (literal)
Alternative label
  • Nanni P.; Leoni M.; Buscaglia V.; Aliprandi G. (1994)
    Low-temperature aqueous preparation of barium metatitanate powders
    in Journal of the European Ceramic Society
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Nanni P.; Leoni M.; Buscaglia V.; Aliprandi G. (literal)
Pagina inizio
  • 85 (literal)
Pagina fine
  • 90 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.sciencedirect.com/science/article/pii/0955221994900485 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 14 (literal)
Rivista
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto di Chimica, Facoltà di Ingegneria, Università di Genova, Fiera Mare, Pad. D, Piazzale Kennedy, I-16129 Genoa, Italy; Istituto di Chimica Fisica Applicata dei Materiali, CNR, Via De Marini 6, I-16149 Genoa, Italy; Istituto di Scienze e Tecnologie dell'Ingegneria Chimica, Via Opera Pia, I-16145 Genoa, Italy (literal)
Titolo
  • Low-temperature aqueous preparation of barium metatitanate powders (literal)
Abstract
  • Submicron BaTiO3 powders have been prepared at 85°C under atmospheric pressure starting from TiCl4 and Ba(OH)2 in NaOH aqueous solution. Characterisation by BET, thermal analysis, differential dilatometry, X-ray diffraction and SEM/TEM microscopy has been performed. The powders, with high specific surface area, show a cubic lattice and a quasi-spherical morphology. A slight deviation from stoichiometry and a low level of residual carbonate have also been observed. Sintering tests on isostatically pressed samples without binders have been carried out. A 15 h thermal treatment at 950°C upon firing results in improved final density (? 96% of the theoretical density) and in very fine grain size (1·1 ?m). Washing with dilute (0·1 m) acetic or hydrochloric acid to eliminate BaCO3 is detrimental to a high final density and gives rise to polytitanate formation. (literal)
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