Structure And Properties of Nanoparticles Formed under Conditions of Wire Electrical Explosion

Structure and properties of nanoparticles formed under conditions of wire electrical explosion were studied. It was shown that the state of WEE power particles can be characterized as a metastable state. It leads to an increased stability of nanopowders at normal temperatures and an increased reactivity during heating, which is revealed in the form of threshold phenomena.Comment: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions

Application of aluminum nanopowder in hydrogen power engineering

The results of researches on interaction of aluminum nanopowder with water have been given. It is shown, that in conditions of relatively low temperatures aluminum nanopowder totally cooperates with water, allocating "hot" hydrogen. The interaction process is accompanied by the chemical-mechanical effect, decrease of water boiling temperature and self-heating of reacting particles. The formed nanoporous materials have various chemical and phase structure. Advantages and disadvantages of aluminum nanopowder application for obtaining hydrogen are analyzed

Influence of dispersion state of initial AlN powder on the hydrolysis process in air environment

The research results of the hydrolysis processes of aluminum nitride powders received by the SVS method in dependence on humidity of the storage environment, and grain size distribution are presented in this work. Oxidation kinetics was estimated by means of X- ray Diffraction (XRD) and scanning electron microscopy (SEM). The induction period of the hydrolysis process for various powders, its dependence on powder dispersion and thickness of the oxide layer on surface of particles have been defined