Al/NiO nanocomposites for enhanced energetic properties: Preparation by polymer assembly method

Dong, Haoxue; Xia, Min; Wang, Cuixiao; Li, Guoping; Luo, Yunjun

doi:10.1016/j.matdes.2019.108111

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…Electrostatically enhanced nano-Al and nano-Fe 2 O 3 particle self-assembly was realized to design reactive Al/Fe 2 O 3 tEMs, and the burning process of the resulting product is controlled by adjusting the magnitude of the particle charge [ 114 ]. The Al/NiO tEMs are fabricated via co-assembly with poly(4-vinylpyridine) (P4VP), and the structure of the Al/NiO nanocomposites with P4VP is more regular and compact, resulting in a higher output of heat (2190 J/g), a higher maximum explosion pressure (0.35 MPa), a faster pressure rise rate (260 MPa/s) and burning rate (462 m/s), compared with those of a physically mixed sample [ 115 ]. In addition, C. Rossi et al [ 116 ] reported a novel technique of DNA (e.g., a linker with sequence 5′ to 3′ of GAGGGATTATTGTTAd)TTAACGTACAGTATG)-directed assembly procedure to obtain highly Al/CuO tEMs, showing a total highest heat of reaction of 1800 J/g for the 80 nm Al NPs, and the onset temperature can be adjusted by changing the size of Al particles.…”

Section: Synthesis Methods For Temsmentioning

confidence: 99%

Highly Reactive Thermite Energetic Materials: Preparation, Characterization, and Applications: A Review

et al. 2023

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As a promising kind of functional material, highly reactive thermite energetic materials (tEMs) with outstanding reactive activation can release heat quickly at a high reaction rate after low-energy stimulation, which is widely used in sensors, triggers, mining, propellants, demolition, ordnance or weapons, and space technology. Thus, this review aims to provide a holistic view of the recent progress in the development of multifunctional highly reactive tEMs with controllable micro/nano-structures for various engineering applications via different fabricated techniques, including the mechanical mixing method, vapor deposition method, assembly method, sol-gel method, electrospinning method, and so on. The systematic classification of novel structured tEMs in terms of nano-structural superiority and exothermic performance are clarified, based on which, suggestions regarding possible future research directions are proposed. Their potential applications within these rapidly expanding areas are further highlighted. Notably, the prospects or challenges of current works, as well as possible innovative research ideas, are discussed in detail, providing further valuable guidelines for future study.

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Section: Synthesis Methods For Temsmentioning

confidence: 99%

Highly Reactive Thermite Energetic Materials: Preparation, Characterization, and Applications: A Review

et al. 2023

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“…Ni nanoparticle decorated outside the Al 2 O 3 layer acts as an excellent assistant. Given the close contact with the Al interface (Figure 2e), Ni can transfer oxygen molecules to the internal Al by the cyclic thermite reaction, 37 that is, 2Ni + O 2 → 2NiO, 3NiO + 2Al → 3Ni + Al 2 O 3 , and 2Ni + O 2 → 2NiO, and spinel reaction, that is, NiO + Al 2 O 3 → NiAl 2 O 4 (Figure 7). The heat release of these reactions enlarges the Al 2 O 3 layer gap, that is, the transport channels of oxygen molecules and Al ions, leading to the escape of a large amount of molten Al (Figure 6d).…”

Section: Thermalmentioning

confidence: 99%

Facile Fabrication of Highly Efficient Hollow Ni/Al Bimetal Fuel with Enhanced Thermal Oxidation Behavior

Jiang

Cheng

et al. 2020

Ind. Eng. Chem. Res.

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Al powder has been used as a common fuel in various energetic materials because of the high enthalpy of its oxidation. The thermal oxidation behavior of Al fuel is a key issue that can determine the energetic properties of Al-based energetic materials. Paradoxically, highly active Al with a low melting point is trapped by a dense surface Al 2 O 3 inertia layer with a high melting point, resulting in low thermal oxidation efficiency at elevated temperatures. In this work, a series of low content of hollow Ni nanoparticles are decorated on the Al surface, and the formed Ni/ Al bimetal fuels are constructed through a novel and simple replacement reaction between Al and NiF 2 solution. NiF 2 not only ionizes F − to remove the Al 2 O 3 inertia layer but also ionizes Ni 2+ to provide a Ni source for deposition. Decorating with low-content Ni nanoparticles improves the intensity, speed, and completion of the high-temperature thermal behavior of Al powder. For instance, the high-temperature oxidation peak of the representative Ni/ Al with 2% Ni content is advanced by approximately 95 °C, and the heat release is over 1.85 times than that of the raw Al. The main role of Ni decoration can destroy effectively the Al 2 O 3 inert layer at high temperature and then enlarge the transport channels of oxygen molecules and Al ions, causing the inner molten Al to encounter external rich-oxygen environment rapidly. The as-obtained Ni/Al bimetal fuels are expected to have wide application prospects in solid energetic materials.

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“…Among these fuels, Li and Zr are prone to spontaneous combustion and explosion in air [ 9 ]; the combustion products of Be are highly toxic [ 10 ]; and the calorific value of Fe is low. Therefore, B [ 11 ], Al [ 12 , 13 , 14 ], and Mg [ 15 ] are commonly used as metal fuels in propellants. Additionally, B is superior in calorific value to Al and Mg, as it shows a gravimetric value that is 2.1 and 1.9 times greater and a volumetric value that is 3.2 and 1.6 times greater than that of Mg and Al, respectively [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties

Liu¹,

Wang²,

Liu³

et al. 2023

Molecules

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Boron powder is a kind of metal fuel with high gravimetric and volumetric calorific values, which has been widely used in military fields such as solid propellants, high-energy explosives, and pyrotechnics. However, the easily formed liquid oxide layer can adhere to the surface of boron powder and react with the hydroxyl (-OH) group of hydroxyl-terminated polybutadiene (HTPB) binder to form a gel layer that is detrimental to propellant processing and restricts the complete oxidation of boron powder. Therefore, to improve the combustion efficiency of boron powder, the ignition and combustion mechanisms of boron powder have been studied, and surface coating modification strategies have been developed by researchers worldwide, aiming to optimize the surface properties, improve the reaction activity, and promote the energy release of boron powder. In this review, recent studies on the ignition and combustion mechanisms of boron powder are discussed. Moreover, the reported boron powder coating materials are classified according to the chemical structure and reaction mechanism. Additionally, the mechanisms and characteristics of different coating materials are summarized, and the mechanism diagrams of fluoride and metal oxide are provided. Furthermore, promising directions for modification methods and the potential application prospects of boron powder are also proposed.

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Al/NiO nanocomposites for enhanced energetic properties: Preparation by polymer assembly method

Cited by 13 publications

References 14 publications

Highly Reactive Thermite Energetic Materials: Preparation, Characterization, and Applications: A Review

Highly Reactive Thermite Energetic Materials: Preparation, Characterization, and Applications: A Review

Facile Fabrication of Highly Efficient Hollow Ni/Al Bimetal Fuel with Enhanced Thermal Oxidation Behavior

High Calorific Values Boron Powder: Ignition and Combustion Mechanism, Surface Modification Strategies and Properties

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