TITLE

Specific Features of Synthesis of Detonation Nanodiamonds

AUTHOR(S)
Danilenko, V.
PUB. DATE
September 2005
SOURCE
Combustion, Explosion, & Shock Waves;Sep2005, Vol. 41 Issue 5, p577
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It is demonstrated that the Chapman-Jouguet parameters for high explosives used in nanodiamond synthesis are located in the region of liquid nanocarbon; therefore, the chemical reaction zone of the detonation wave involves formation of carbon nanodroplets, which are later crystallized into nanodiamonds on the segment of the isentrope of expansion of detonation products, passing through the region of stability of nanodiamonds in the pressure range of 16.5–10 GPa and the temperature range of 3400–2900 K. Soot in the resultant mixture is the product of amorphization of nanodroplets rather than graphitization of ultrafine diamonds. The influence of detonation conditions of high-explosive charges in an explosive chamber on nanodiamond synthesis is analyzed.
ACCESSION #
18522606

 

Related Articles

  • Heat of explosion of commercial and brisant high explosives. Pepekin, V.; Gubin, S. // Combustion, Explosion, & Shock Waves;Mar2007, Vol. 43 Issue 2, p212 

    Methods for determining the heat of explosion of high explosives (HEs) with ideal and nonideal processes of explosive decomposition are considered. It is shown that the heat of explosion is of significance for estimating the efficiency of commercial HEs and is used in the energetic...

  • Influence of HMX particle size on the synthesis of nanodiamonds in detonation waves. Kozyrev, N.; Larionov, B.; Sakovich, G. // Combustion, Explosion, & Shock Waves;Mar2008, Vol. 44 Issue 2, p193 

    The effect of the particle size of HMX in alloys with TNT on the synthesis of nanodiamonds in a detonation wave was studied experimentally. Mixtures with a TNT content of 40 to 90% and the specific surface area of HMX varied in the range of 5–510 m2/kg were investigated. For all mixtures,...

  • Investigation of the reaction zone in heterogeneous explosives substances using an electrical conductivity method. Ershov, A. P.; Satonkina, N. P. // Combustion, Explosion, & Shock Waves;Mar2009, Vol. 45 Issue 2, p205 

    A technique for measuring the electrical conductivity profile behind a detonation wave front with a resolution of about 0.1 mm was used to analyze the reaction zone in heterogeneous explosives. TNT-RDX mixtures, RDX with additives of water, NaCl, and a saturated aqueous solution of NaCl, and...

  • Macrokinetics of the energy release in high explosives containing nano-size boron particles. Utkin, A. V.; Kanel, G. I.; Bogach, A. A.; Razorenov, S. V. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p869 

    The pressure and particle velocity histories in shock and detonation waves have been measured for a coarse-grain and a fine-grain HMX and for a fine-grain HMX+16.4% B mixture. It was concluded the initial decomposition rate and C-J parameters in the mixture are controlled by the heat exchange....

  • Mechanism of Detonation Wave propagation in PBX with Energetic Binder. Plaksin, I.; Campos, J.; Mendes, R.; Ribeiro, J.; Gois, J. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p817 

    The complex phenomena of Detonation Wave (DW) propagation in PBX of 82 % of HMX, with successively HTPB, as inert binder, and GAP as Energetic Binder (EB), with an initial density 99.5% TMD was studied. A thin optical multifibre strip (250 µm each fibre), connected to a fast electronic streak...

  • Reduction of the deflagration-to-detonation transition distance and time in a tube with regular shaped obstacles. Frolov, S. M.; Semenov, I. V.; Komissarov, P. V.; Utkin, P. S.; Markov, V. V. // Doklady Physical Chemistry;Aug2007, Vol. 415 Issue 2, p209 

    The article discusses the role of regular shaped obstacles in speeding up deflagration-to-detonation transition (DDT). It stresses the potential of regular obstacles of special shape to reduce the DDT length and time compared with the efficacy of regular rectangular obstacles. The authors note...

  • DETONATION WAVE PROFILES MEASURED IN PLASTIC BONDED EXPLOSIVES USING 1550 nm PHOTON DOPPLER VELOCIMETRY. Gustavsen, R. L.; Bartram, B. D.; Sanchez, N. J. // AIP Conference Proceedings;12/28/2009, Vol. 1195 Issue 1, p253 

    We present detonation wave profiles measured in two TATB based explosives and two HMX based explosives. Profiles were measured at the interface of the explosive and a Lithium-Fluoride (LiF) window using 1550 nm Photon Doppler Velocimetry (PDV). Planar detonations were produced by impacting the...

  • Estimation of the Shock to Detonation Region Inside an Energetic Material. Wemlinger, Erik; Stowe, David; Treadway, Sean; Czech, Christopher; Cogar, John // AIP Conference Proceedings;2017, Vol. 1793 Issue 1, p1 

    A series of six tests were conducted investigating the shock-to-detonation transition (SDT) in cylindrical samples of HE with a wax binder. A 40 mm powder gun was used to launch spherical steel fragments at a mean velocity of 1519 m/s into the HE. For each test 9 piezoelectric pins were placed...

  • Shock initiation of the TATB-based explosive PBX-9502 heated to ~76°C. Gustavsen, R. L.; Gehr, R. J.; Bucholtz, S. M.; Pacheco, A. H.; Bartram, B. D. // AIP Conference Proceedings;2017, Vol. 1793 Issue 1, p1 

    We present gas-gun driven plate impact shock initiation experiments on the explosive PBX 9502 (95 weight percent triaminotrinitrobenzene, 5 weight percent Kel-F 800 binder) heated to ∼ 76°C. PBX 9502 samples were heated by flowing hot air through a sample mounting plate and surrounding...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics