Study of leucite-type glass-ceramics by thermally stimulated depolarization current

Topić, Mladen; Musić, Svetozar; Ristić, Mira; Živko-Babić, Jasenka (2001) Study of leucite-type glass-ceramics by thermally stimulated depolarization current. Croatica Chemica Acta, 74 (1). pp. 183-193. ISSN 0011-1643

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Abstract

Two different ingots of leucite-type glass-ceramics were studied by integral and by partial thermally stimulated depolarization current (TSDC) in the range from 173 to 370 K. Partial measurements showed distributed dipolar relaxation (P-1) with a maximum at 256 K, caused by the interaction between alkali ions and nonbridging oxygen atoms. The following relaxation, observed at a higher temperature (P-2), was attributed to the decay of the space charge dipoles. Only the beginning of P-2 was studied because the development of the process was overlapped by the conductivity current. Addition of different oxides to the original material decreased the P-1 and increased the P-2 relaxation, due to the increase of the interface area.

Item Type:	Article
Uncontrolled Keywords:	leucite; glass-ceramics; thermally stimulated current; TSDC; phenol-formaldehyde resin; dental use; polarization
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Materials Chemistry
Projects:	Project title Project leader Project code Project type Sinteza i mikrostruktura metalnih oksida i oksidnih stakala Svetozar Musić 00980903 MZOS
Depositing User:	Svetozar Musić
Date Deposited:	20 Nov 2013 10:28
URI:	http://fulir.irb.hr/id/eprint/995

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