Solid state synthesis of nano-boehmite-derived CuAlO2 powder and processing of the ceramics
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 / BoehmiteSource:
Journal of the European Ceramic Society, 2013, 33, 15-16, 3231-3241Publisher:
- 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
Collections
Institution/Community
Institut za multidisciplinarna istraživanjaTY - 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 . .