Thermites or composite energetic materials are mixtures made of fuel and oxidizer particles at micron-scale. Thermite reactions characterized by high adiabatic flame temperatures (>1000 °C) heats reaction (>kJ/cm3), sometimes combined with gas generation. These properties strongly depend on the chemical nature couple components implemented. The present work focuses use indium (III) oxide ...

In this work, for the first time, spotlight was shined on in-depth understanding reaction mechanism of nanoTi-based thermite. It found that adding nanoTi into thermite can improve combustion efficiency and lower ignition temperature Al based nanothermites. This experimental study aims at establishing mechanisms driving improvement by quantitatively analyzing oxidation Ti in contact with a stron...

Intermetallic (aluminum and zirconium) thermite molybdenum trioxide) projectiles were launched using a high velocity impact ignition testing system. The experiments designed to simulate reactivity in (argon) low (air) altitude environments. into chamber that included steel target plate for projectile penetration before impacting rear witness plate. was semi-sealed instrumented quasi-static pres...

Metallic powders such as thermite are known as efficient fuels also applicable in oxygen-free environments. However, due to their hydrophobicity, they hardly penetrate into water. This paper presents an effect that enables the insertion and confinement of hydrophobic metallic powders in water, based on encapsulating an air bubble surrounded by a hydrophobic metallic shell. This effect, regarded...

A previously developed heat transfer model is used to study the influence of welding parameters on weld defect development in thermite welds. Weld defect formation maps are constructed from a series of heat transfer simulations. For the current normal rail thermite welding conditions, it is found that shrinkage cavity formation can be avoided but cold-lap and centre-line defects are likely to o...

A prior investigation by the authors demonstrated that incorporating 25% of copper complex (Cu(NH3)4(NO3)2) into Al/CuO nanothermite enables to produce highly-reactive gas-generating energetic composites for emerging micro-airbag applications. To further improve decomposition gaseous species (N2, O2, N2O), during thermite reaction, we employed ball milling technique diminish its grain size down...

The bimetallic nanothermites, composed often of the core-shell nanoparticles or the nano-scale multilayers, provide a direct interface between two reactive metals and therefore facilitate the thermite reaction without generating excessive gases. This characteristic is extremely important for wire or material joining applications. In this study we investigated the energetic properties and diffus...