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Performance Enhancement via Incorporation of ZnO Nanolayers in Energetic Al/CuO Multilayers

Marín, Lorena and Gao, Yuzhi and Vallet, Maxime and Abdallah, Iman and Warot-Fonrose, Bénédicte and Tenailleau, Christophe and Lucero, Antonio T. and Kim, Jiyoung and Estève, Alain and Chabal, Yves J. and Rossi, Carole Performance Enhancement via Incorporation of ZnO Nanolayers in Energetic Al/CuO Multilayers. (2017) Langmuir, 33 (41). 11086-11093. ISSN 0743-7463

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Official URL: https://doi.org/10.1021/acs.langmuir.7b02964


Al/CuO energetic structure are attractive materials due to their high thermal output and propensity to produce gas. They are widely used to bond components or as next generation of MEMS igniters. In such systems, the reaction process is largely dominated by the outward migration of oxygen atoms from the CuO matrix toward the aluminum layers, and many recent studies have already demonstrated that the interfacial nanolayer between the two reactive layers plays a major role in the material properties. Here we demonstrate that the ALD deposition of a thin ZnO layer on the CuO prior to Al deposition (by sputtering) leads to a substantial increase in the efficiency of the overall reaction. The CuO/ZnO/Al foils generate 98% of their theoretical enthalpy within a single reaction at 900 °C, whereas conventional ZnO-free CuO/Al foils produce only 78% of their theoretical enthalpy, distributed over two distinct reaction steps at 550 °C and 850 °C. Combining high-resolution transmission electron microscopy, X-ray diffraction, and differential scanning calorimetry, we characterized the successive formation of a thin zinc aluminate (ZnAl2O4) and zinc oxide interfacial layers, which act as an effective barrier layer against oxygen diffusion at low temperature.

Item Type:Article
HAL Id:hal-01613523
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 - Toulouse INP (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > University of Texas at Dallas (USA)
Laboratory name:
Agence Nationale de la Recherche- ANR
Deposited On:07 Feb 2019 11:11

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