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Sol–gel synthesis and sintering of submicronic copper molybdate (α-CuMoO4) powders

Benchikhi, Mohamed and El Ouatib, Rachida and Guillemet-Fritsch, Sophie and Chane-Ching, Jean-Yves and Er-Rakho, Lahcen and Durand, Bernard Sol–gel synthesis and sintering of submicronic copper molybdate (α-CuMoO4) powders. (2014) Ceramics International, 40 (4). 5371-5377. ISSN 0272-8842

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Official URL: http://dx.doi.org/10.1016/j.ceramint.2013.10.118

Abstract

A sol–gel method was proposed to prepare copper II molybdate α-CuMoO4 powders. A gel was first obtained via the polymerizable complex method, using citric acid as complexing and polymerizing agent, dried at 120 °C and decomposed at 300 °C. A calcination in the temperature range 400–500 °C for 2 h led to the pure phase α-CuMoO4. The different powders obtained were characterized by X ray diffraction analysis and by transmission (TEM) and scanning (SEM) electron microscopies. Ceramics were prepared using conventional sintering and spark plasma sintering (SPS) techniques. A maximal relative density of 94.8% was reached after conventional sintering at 520 °C for 2 h. In the case of SPS, the densification was optimized by varying the temperature, the time and the applied pressure. Higher densities, up to 98.7%, were obtained at very low temperature, i.e., 300 °C, for 5 min only under a pressure of 225 MPa.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Ceramics International website : http://www.sciencedirect.com/science/journal/02728842
HAL Id:hal-01166282
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Université Hassan II Casablanca - UH2C (MOROCCO)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:22 Jun 2015 12:43

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