Fabrication and performances of AI/CuO nano composite films for ignition application

Li, Yong; Gao, Yunji; Jia, Xin; Zhou, Bin; Shen, Ruiqi

doi:10.1088/1757-899x/87/1/012102

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…9,10 MICs can produce a shock wave with a high burning rate during combustion. 11−13 The applications of MICs have expanded rapidly, these were initially used as pyrotechnic compounds and then used as igniting powders, 14,15 high-energy additives for explosives, 6,16,17 MEMS, 9 electric igniters, 18 gas generators, 19 and even the latest application as a biocidal agent. 20 The reactive properties of MICs are attributed to the composition, structure, and particle size.…”

Section: ■ Introductionmentioning

confidence: 99%

“…MICs are composed of a mixture of nanoscale fuel and oxidant, also known as nanothermite . MICs have become an important field of energetic materials because of their high reactivity and high energy density. , MICs can produce a shock wave with a high burning rate during combustion. − The applications of MICs have expanded rapidly, these were initially used as pyrotechnic compounds and then used as igniting powders, , high-energy additives for explosives, ,, MEMS, electric igniters, gas generators, and even the latest application as a biocidal agent …”

Section: Introductionmentioning

confidence: 99%

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Sulfate-Based Nanothermite: A Green Substitute of Primary Explosive Containing Lead

Qin

et al. 2018

ACS Sustainable Chem. Eng.

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Currently, synthesizing a “green” alternative for primary explosives has become a new challenge for researchers, therefore the feasibility of sulfate-based nanothermite n-Al/CuSO4·5H2O was investigated in this work. n-Al/CuSO4·5H2O was prepared by electrostatic spraying (ES), which formed unified microspheres; CuSO4·5H2O particles were coated with n-Al particles. The reactivity was initially evaluated using thermogravimetry (TG) and differential scanning calorimetry (DSC), and the results show that the heat release of n-Al/CuSO4·5H2O (ES) is 1.6 kJ/g more than that of n-Al/CuSO4·5H2O (PM). A high-speed camera and ignition experiments in a confined bomb were used to assess the combustion performance of the two samples. Results show that n-Al/CuSO4·5H2O (ES) exhibited outstanding performance for flame, peak pressure, and pressurization rate. The combustion in the confined bomb experiment also demonstrates that a molar ratio up to 8:1 can be the optimum ratio for the reaction between the fuel and the oxidizer. To compare the performance of metallic oxide nanothermite, n-Al/CuO was prepared by physical mixing. The n-Al/CuSO4·5H2O nanothermite shows more gas release and it is safer than that of n-Al/CuO nanothermite, which was confirmed by the results of combustion in the confined bomb and electrostatic sensitivity experiments. Moreover, in this investigation n-Al/CuSO4·5H2O (ES) was used to directly initiate RDX which is a feasible design for replacing lead-based primary explosives.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sulfate-Based Nanothermite: A Green Substitute of Primary Explosive Containing Lead

Qin

et al. 2018

ACS Sustainable Chem. Eng.

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Integrating micro-ignitors with Al/Bi2O3/graphene oxide composite energetic films to realize tunable ignition performance

Cheng

et al. 2018

Journal of Applied Physics

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The integration of composite energetic films (CEFs) with various types of initiators can effectively adjust their performance and represents potential applications in microscale energy-demanding systems. In this study, the Al/Bi2O3/graphene oxide (GO) CEFs were successfully integrated into copper micro-ignitors by electrophoretic deposition, a low-cost and time-saving method. The effects of the Al/Bi2O3/GO CEFs with different GO contents on exothermic performance and ignition properties of micro-ignitors were then systematically investigated in terms of heat release, activation energy, ignition duration, the maximum height of the ignition product, and ignition delay time. The results showed that the addition of GO promoted more heat releases and higher activation energies of Al/Bi2O3/GO CEFs. The addition of ≤3.5 wt. % GO prolonged the ignition duration from 450 μs to 950 μs and increased the maximum height of the ignition product from about 40 mm to 60 mm. However, the micro-ignitors with more than 3.5 wt. % GO cannot be ignited, which suggested that GO played a contradictory role in the ignition properties of micro-ignitors and the controlled GO content was a prerequisite for improved ignition performance. The ignition delay time gradually extended from 10.7 μs to 27.6 μs with increases in the GO contents of Al/Bi2O3 CEFs, revealing that an increase in the weight ratio of GO leads to lower ignition sensitivity of micro-ignitors.

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Fabrication and performances of AI/CuO nano composite films for ignition application

Cited by 2 publications

References 9 publications

Sulfate-Based Nanothermite: A Green Substitute of Primary Explosive Containing Lead

Sulfate-Based Nanothermite: A Green Substitute of Primary Explosive Containing Lead

Integrating micro-ignitors with Al/Bi2O3/graphene oxide composite energetic films to realize tunable ignition performance

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