Experimental determination of the eutectic temperature in air of the CuO-TiO2 pseudobinary system

Rubia López, Miguel Ángel de la and Jiménez Reinosa, Julián and Leret Molto, Pilar and Romero Fanego, Juan José and Frutos Vaquerizo, José de and Fernández Lozano, José Francisco (2012). Experimental determination of the eutectic temperature in air of the CuO-TiO2 pseudobinary system. "Journal of the European Ceramic Society", v. 32 (n. 1); pp. 71-76. ISSN 0955-2219. https://doi.org/10.1016/j.jeurceramsoc.2011.07.026.

Description

Title: Experimental determination of the eutectic temperature in air of the CuO-TiO2 pseudobinary system
Author/s:
  • Rubia López, Miguel Ángel de la
  • Jiménez Reinosa, Julián
  • Leret Molto, Pilar
  • Romero Fanego, Juan José
  • Frutos Vaquerizo, José de
  • Fernández Lozano, José Francisco
Item Type: Article
Título de Revista/Publicación: Journal of the European Ceramic Society
Date: January 2012
ISSN: 0955-2219
Volume: 32
Subjects:
Freetext Keywords: owder-solid state reaction; Firing; TiO2; Transition metal oxides; Eutectic
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Física Aplicada a las Tecnologías de la Información [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Eutectic temperature and composition in the CuO–TiO2 pseudobinary system have been experimentally determined in air by means differential thermal analysis (DTA), thermogravimetry (TG) and hot-stage microscopy (HSM). Samples of the new eutectic composition treated at different temperatures have been characterized by X-ray diffraction (XRD) and X-ray absorption near-edge structural spectroscopy (XANES) to identify phases and to determine the Cu valence state, respectively. The results show that the eutectic temperature in air is higher by 100 °C (∼1000 °C) for a Ti-richer composition (XTiO2=25 mol%) than the one calculated in the literature. The reduction of Cu2+ to Cu+ takes places at about 1030 °C. The existence of Cu2TiO3 and Cu3TiO4 has been confirmed by XRD in the temperature range between 1045 and 1200 °C.

More information

Item ID: 20229
DC Identifier: http://oa.upm.es/20229/
OAI Identifier: oai:oa.upm.es:20229
DOI: 10.1016/j.jeurceramsoc.2011.07.026
Official URL: http://www.sciencedirect.com/science/article/pii/S0955221911003608
Deposited by: Memoria Investigacion
Deposited on: 30 Sep 2013 18:22
Last Modified: 21 Apr 2016 22:51
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