Authors:
G. Colón Universidad de Sevilla Instituto de Ciencia de Materiales de Sevilla (ICMSE), Centro Mixto Consejo Superior de Investigaciones Científicas (C.S.I.C.) c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain

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M. Avilés Universidad de Sevilla Instituto de Ciencia de Materiales de Sevilla (ICMSE), Centro Mixto Consejo Superior de Investigaciones Científicas (C.S.I.C.) c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain

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J. Navío Universidad de Sevilla Instituto de Ciencia de Materiales de Sevilla (ICMSE), Centro Mixto Consejo Superior de Investigaciones Científicas (C.S.I.C.) c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain

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P. Sánchez-Soto Universidad de Sevilla Instituto de Ciencia de Materiales de Sevilla (ICMSE), Centro Mixto Consejo Superior de Investigaciones Científicas (C.S.I.C.) c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain c/Américo Vespucio s/n, Isla de la Cartuja 41092 Sevilla Spain

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Abstract  

A microcomposite powder in the system TiO2—ZrO2 as a precursor of zirconium titanate (ZT) materials has been studied by thermal methods (DTA-TG) and X-ray diffraction (XRD). The microcomposite powder has been prepared by chemical processing of crystalline TiO2 (rutile, 10 mass% anatase),as inner core, coated with in situ precipitated amorphous hydrated zirconia gel, asouter core. The morphology and chemical composition of the resultant powders has been examined by SEM-EDX (Scanning electron microscopy-energy dispersive X-ray spectroscopy). Thermal behaviour of the microcomposite powder was reported, showing the dehydration and dehydroxylation of the zirconia gel, the crystallization into metastable cubic/tetragonal zirconia at temperatures 400—470°C, and the feasibility of preparing ZT powder materials by progressive reaction of TiO2 and ZrO2 at higher temperatures (1400°C).

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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