Dispersion characteristics of sol-gel derived (Ba0.2Pb0.8)TiO3 various pH

Suspension behaviour of sol-gel derived (Ba0.2Pb0.8)TiO3 powder was observed as a function of pH (pH 1 to 13). The dispersion has an isoelectric point (IEP) at pH 7, and better dispersion at lower and higher pH than 7. The powder has a BET surface area of 2.3 m2 /g at pH 7 and 97 to 105 m2/g at pH 1...

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Veröffentlicht in:	Journal of materials science 1990-09, Vol.25 (9), p.3880-3885
Hauptverfasser:	Jo, Kyung Haw, Kim, Eung Soo, Yoon, Kl Hyun
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Chemical industry and chemicals Electrotechnical and electronic ceramics Exact sciences and technology Technical ceramics
Online-Zugang:	Volltext
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Zusammenfassung:	Suspension behaviour of sol-gel derived (Ba0.2Pb0.8)TiO3 powder was observed as a function of pH (pH 1 to 13). The dispersion has an isoelectric point (IEP) at pH 7, and better dispersion at lower and higher pH than 7. The powder has a BET surface area of 2.3 m2 /g at pH 7 and 97 to 105 m2/g at pH 1, 11 and 13. The sol-gel specimens derived from well dispersed suspensions with pH 11 and 13 showed a high relative density (95 to 98%). 16 refs.
ISSN:	0022-2461 1573-4803
DOI:	10.1007/BF00582454