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Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics

Authorized Users Only
2013
Authors
Vojisavljević, Katarina
Malic, Barbara
Senna, M.
Drnovsek, S.
Kosec, M.
Article (Published version)
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Abstract
The delafossite CuAlO2 powder was prepared from the nano-boehmite AlOO center dot xH(2)O and Cu2O by the solid state synthesis at 1100 degrees C in argon. The inherently slow solid state reaction was accelerated by introducing rod-like boehmite nano-particles which fully covered the 1 mu m sized Cu2O particles in the reactant mixture, and decomposition of the nano-boehmite upon calcination. In contrast, the reaction between the Cu2O and Al2O3, introduced as a reference, resulted in mixed phases under the same experimental conditions. Sintering of the nano-boehmite derived CuAlO2 powder compact at 1100 degrees C for 2 h in air resulted in the delafossite ceramic with 86% of theoretical density, without any impurities detectable by X-ray diffraction analysis. The analysis of the microstructure by scanning electron microscopy confirmed that the bulk of the sintered sample was delafossite phase with uniformly distributed porosity, with only traces of Cu-rich impurities at the surface.
Keywords:
Delafossite CuAlO2 / Calcination atmosphere / Bulk sintering / Boehmite
Source:
Journal of the European Ceramic Society, 2013, 33, 15-16, 3231-3241
Publisher:
  • Elsevier Sci Ltd, Oxford
Funding / projects:
  • Slovenian research agencySlovenian Research Agency - Slovenia [P2-0105, J2-4273, 1000-11-780007]
  • EC within 7FP ORAMA project [NMP3-LA-2010-246334]

DOI: 10.1016/j.jeurceramsoc.2013.05.025

ISSN: 0955-2219

WoS: 000324901800041

Scopus: 2-s2.0-84883209756
[ Google Scholar ]
18
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/733
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Senna, M.
AU  - Drnovsek, S.
AU  - Kosec, M.
PY  - 2013
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/733
AB  - The delafossite CuAlO2 powder was prepared from the nano-boehmite AlOO center dot xH(2)O and Cu2O by the solid state synthesis at 1100 degrees C in argon. The inherently slow solid state reaction was accelerated by introducing rod-like boehmite nano-particles which fully covered the 1 mu m sized Cu2O particles in the reactant mixture, and decomposition of the nano-boehmite upon calcination. In contrast, the reaction between the Cu2O and Al2O3, introduced as a reference, resulted in mixed phases under the same experimental conditions. Sintering of the nano-boehmite derived CuAlO2 powder compact at 1100 degrees C for 2 h in air resulted in the delafossite ceramic with 86% of theoretical density, without any impurities detectable by X-ray diffraction analysis. The analysis of the microstructure by scanning electron microscopy confirmed that the bulk of the sintered sample was delafossite phase with uniformly distributed porosity, with only traces of Cu-rich impurities at the surface.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics
EP  - 3241
IS  - 15-16
SP  - 3231
VL  - 33
DO  - 10.1016/j.jeurceramsoc.2013.05.025
ER  - 
@article{
author = "Vojisavljević, Katarina and Malic, Barbara and Senna, M. and Drnovsek, S. and Kosec, M.",
year = "2013",
abstract = "The delafossite CuAlO2 powder was prepared from the nano-boehmite AlOO center dot xH(2)O and Cu2O by the solid state synthesis at 1100 degrees C in argon. The inherently slow solid state reaction was accelerated by introducing rod-like boehmite nano-particles which fully covered the 1 mu m sized Cu2O particles in the reactant mixture, and decomposition of the nano-boehmite upon calcination. In contrast, the reaction between the Cu2O and Al2O3, introduced as a reference, resulted in mixed phases under the same experimental conditions. Sintering of the nano-boehmite derived CuAlO2 powder compact at 1100 degrees C for 2 h in air resulted in the delafossite ceramic with 86% of theoretical density, without any impurities detectable by X-ray diffraction analysis. The analysis of the microstructure by scanning electron microscopy confirmed that the bulk of the sintered sample was delafossite phase with uniformly distributed porosity, with only traces of Cu-rich impurities at the surface.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics",
pages = "3241-3231",
number = "15-16",
volume = "33",
doi = "10.1016/j.jeurceramsoc.2013.05.025"
}
Vojisavljević, K., Malic, B., Senna, M., Drnovsek, S.,& Kosec, M.. (2013). Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics. in Journal of the European Ceramic Society
Elsevier Sci Ltd, Oxford., 33(15-16), 3231-3241.
https://doi.org/10.1016/j.jeurceramsoc.2013.05.025
Vojisavljević K, Malic B, Senna M, Drnovsek S, Kosec M. Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics. in Journal of the European Ceramic Society. 2013;33(15-16):3231-3241.
doi:10.1016/j.jeurceramsoc.2013.05.025 .
Vojisavljević, Katarina, Malic, Barbara, Senna, M., Drnovsek, S., Kosec, M., "Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics" in Journal of the European Ceramic Society, 33, no. 15-16 (2013):3231-3241,
https://doi.org/10.1016/j.jeurceramsoc.2013.05.025 . .

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