Electroexplosive Nanometals

Nazarenko, Olga B.; Gromov, Alexander A.; Il’in, A. P.; Pautova, Julia; Tikhonov, D.V.

doi:10.1002/9783527680696.ch3

Cited by 7 publications

(5 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is known that nanosized powders have new properties compared with coarsely dispersed powders [1][2][3][4][5]. For example, at combustion of aluminum, titanium, zirconium, and other metals in air the corresponding nitrides are stabilized in the final products [6,7].…”

Section: Introductionmentioning

confidence: 99%

Conditions of Millisecond Laser Ignition and Thermostability for Ammonium Perchlorate/Aluminum Mixtures

Medvedev

Tsipilev

Reshetov

et al. 2017

Prop., Explos., Pyrotech.

View full text Add to dashboard Cite

The experimental investigations of laser‐induced ignition and heat action of ammonium perchlorate and aluminum powder mixtures are presented in this paper. A laser pulse with wavelength of 1.06 μm and duration of 3.5 ms was used. Powder mixtures of different dispersion were tested, namely, coarsely dispersed powders and nanopowders with average surface diameters of 80 and 0.25 μm, respectively. The values of ignition thresholds and delays of the mixtures activity in air were measured, and experimental results for different exposure conditions were obtained. The possible reasons of different sensitivity for the given mixtures to laser pulse and heat action are discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Conditions of Millisecond Laser Ignition and Thermostability for Ammonium Perchlorate/Aluminum Mixtures

Medvedev

Tsipilev

Reshetov

et al. 2017

Prop., Explos., Pyrotech.

View full text Add to dashboard Cite

show abstract

“…Aluminum nanopowder (Al NP) produced by the method of electrical explosion of wires (EEW) in hydrogen [8][9][10][11][12] were used in this study. X-ray diffraction analysis (XRD) was performed using an X-ray diffractometer Shimadzu XRD-7000, CuKα-radiation.…”

Section: Methodsmentioning

confidence: 99%

Influence of Factors Affecting the Parameters of Combustion of Aluminum Nanopowders in the Bulk Layer

Sechin

Nazarenko

Amelkovich

et al. 2019

MSF

View full text Add to dashboard Cite

The article presents the study of factors affecting the ability to control the self-propagating high-temperature synthesis of nanomaterials. It is established that there are two steps in the combustion process nanomaterial: burning of surface layer and deep combustion area, which can be considered as the thermal explosion. It was found that the surface roughness and the thermal conductivity of the substrate do not affect the combustion front velocity. The presence of glass transition on the substrate surface also does not affect the velocity of the front. It was established that the parameters of the deep combustion area do not depend on the nature of the initiation of combustion, being the second stage of the development of combustion; in all cases this stage is characterized by the same parameters. When varying the type of ignition source, the length of the surface burning front can vary up to 33%. The time of induction of a thermal explosion increases when the bulk layer of powder ignites from above.

show abstract

“…One of the main method, which let to produce metal nanopowders in commercial scale, are electrical explosion of wire (EEW). It is nonequilibrium process, in which material of wire is heated and it disperses under force of pulsate electric current [1,2].…”

Section: Intorductionmentioning

confidence: 99%

“…Aluminum nanopowder was produced by EEW in argon medium (Ar) and in mixture of argon and nitrogen (Ar+N 2 ) medium [1,2]. Iron nanopowder was produced by EEW in argon medium.…”

Section: Experimental Partmentioning

confidence: 99%

Investigation of Dependence between Thermal Stability for Nano-Dispersed Metals and Velocity of Flame Spreading and Time Storage

Amelkovich

Nazarenko

Sechin

et al. 2014

AMM

View full text Add to dashboard Cite

Thermal stability of aluminum, iron and copper nanopowders, produced by electrical explosion of wire during heating in the air, was investigated in the work. Thermal analysis method was used for control of thermal stability for nanodispersed metals in heating in the air. It was shown, that after a long time of storage in air electrical explosion metal nanopowders have had extra active ones. Estimation of velocity of flame spreading in poured layer of the powders was carried out. Quality changes in investigated samples, happened for storage time, lead to increase of flame front length and its line velocity. The results of the researches could be used for diagnostics of fire danger of nanodispersed metals, also for selection of working regimes and provision of fire explosion safety for technologies which produce and apply of nanodispersed metal powders. Time-factor have not effected on criteria concerning the danger of the loads and have not changed its marking.

show abstract

Electroexplosive Nanometals

Cited by 7 publications

References 25 publications

Conditions of Millisecond Laser Ignition and Thermostability for Ammonium Perchlorate/Aluminum Mixtures

Conditions of Millisecond Laser Ignition and Thermostability for Ammonium Perchlorate/Aluminum Mixtures

Influence of Factors Affecting the Parameters of Combustion of Aluminum Nanopowders in the Bulk Layer

Investigation of Dependence between Thermal Stability for Nano-Dispersed Metals and Velocity of Flame Spreading and Time Storage

Contact Info

Product

Resources

About