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Monoclinic ZrO₂ Powders. Some Features of the Interfacial Electrostatic Behaviour

S. Ardizzone ; Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi, 19, 20133 Milan, Italy.
G. Chidichimo ; Department of Chemistry, University of Calabria, Arcavacata di Rende 87030 (Cs), Italy
A. Golemme ; Department of Chemistry, University of Calabria, Arcavacata di Rende 87030 (Cs), Italy
M. Radaelli ; Department of Physical Chemistry and Electrochemistry, University of Milan, Via Golgi, 19, 20133 Milan, Italy.

Sažetak

The paper reports results of both surface charge vs pH measurements and of electrokametie determinations performed on suspension of monoelmic zirconia. The time length os the pre-conditioning of the oxide in the electrolyte (KNO3) appears to affect the value both of the c. !i. p. and of the i. e. p. and to modify the pattern of charge curves. The transition from »fast« to »slow« titrations also introduces remarkable differences in the degree of hysteresis and in the overal trend of charge curves. A common interpretation of these phenomena is proposed considering the high temperature of preparation of the samples and the possible consequent removal of the surface chemisorbed water.

Ključne riječi

Hrčak ID:

137391

URI

https://hrcak.srce.hr/137391

Datum izdavanja:

28.12.1990.

Posjeta: 962 *