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Titolo:
Copper oxide as a sintering agent for barium titanate based ceramics
Autore:
Derling, S; Muller, T; Abicht, HP; Felgner, KH; Langhammer, HT;
Indirizzi:
Univ Halle Wittenberg, Inst Inorgan Chem, Halle, Germany Univ Halle Wittenberg Halle Germany , Inst Inorgan Chem, Halle, Germany Univ Halle Wittenberg, Dept Phys, Halle, Germany Univ Halle Wittenberg Halle Germany ttenberg, Dept Phys, Halle, Germany
Titolo Testata:
JOURNAL OF MATERIALS SCIENCE
fascicolo: 6, volume: 36, anno: 2001,
pagine: 1425 - 1431
SICI:
0022-2461(200103)36:6<1425:COAASA>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
GRAIN-GROWTH; CUO; BATIO3; SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
--discip_EC--
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Derling, S Univ Halle Wittenberg, Inst Inorgan Chem, Halle, Germany Univ Halle Wittenberg Halle Germany gan Chem, Halle, Germany
Citazione:
S. Derling et al., "Copper oxide as a sintering agent for barium titanate based ceramics", J MATER SCI, 36(6), 2001, pp. 1425-1431

Abstract

The purpose of this work was to study the effect of CuO as a versatile sintering agent for BaTiO3 based ceramics. The response is shown to exist in three directions. Firstly, as liquid-phase former at comparatively low temperatures. Hence, the influence of various CuO-based flux formers on the shrinkage behaviour and the microstructure development of the ceramics was investigated. Secondly, the aptitude as an internal susceptor for secondary phase initiated microwave sintering. The use of CuO as a lossy secondary phaseleads to an accelerated microwave heating of the ceramics. Thirdly, the addition of CuO to BaTiO3 powders with Ba-excess results in a phase transition cubic --> hexagonal at about 1300 degreesC, which is a indication for theincorporation of Cu2+ ions into the BaTiO3 lattice at Ti sites under this conditions. (C) 2001 Kluwer Academic Publishers.

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Documento generato il 16/07/20 alle ore 19:07:54