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  • 1 ALOFT/Chemical Engineering & Materials Science, 61 Fairlawn Dr, Berkeley, CA, 94708, USA
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Abstract

To get round two main difficulties of the kinetic study of fast reactions of high-temperature decomposition of energetic materials (EM) (spatial non-isothermality and self-inflammation) two new methods for sample preparation called “mechanical dilution” and “thermal dilution” were applied. In the first part of the presentation, some experimental and theoretical data on kinetics of fast high-temperature decomposition of some typical homogeneous and heterogeneous energetic materials (including pyroxylin, ammonia copper chromate, ammonium perchlorate, solid rocket propellants, and others) are given. In a number of cases, kinetic constants of fast reactions dominating at high temperatures were shown to significantly differ from those of low-temperature reactions. The second part of the presentation deals with a new method of thermal analysis—electrothermal analysis (ETA). By using a multi-channel high-speed optical pyrometer, variation of the temperature field in an electrically heated sample of conductive energetic material (or its mixture with metal powder) during its heating followed by thermal explosion is registered. Due to application of this method in the ETA-100 (allowing one to measure kinetic data at the temperature up to 3800 K with a time step as short as 0.1 ms, i.e., for full conversion times as short as 10−3 s) some important patterns of mechanisms of gasless combustion and explosion in SHS-mixtures (Si + C, Ni + Al, and Ti + C) were identified. More details regarding these and some additional important aspects can be found in [, ].

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  • 2. Shteinberg, AS 2008 Fast reactions in energetic materials: high-temperature decomposition of rocket propellants and explosives Springer-Verlag Berlin-Heidelberg.

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  • 7. Shteinberg, AS, Lin, YC, Son, SF, Mukasyan, AS 2010 Kinetics of high-temperature reaction in Ni-Al system: influence of mechanical activation. J Phys Chem A 114:61116116 .

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  • 8. Shteinberg, AS, Shcherbakov, VA, Munir, ZA 2001 Kinetics of combustion in the layered Ni-Al system. Combust Sci Technol 169:124 .

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  • 15. Knyazik, VA, Mezhanov, AG, Shteinberg, AS 1988 About mechanism of combustion in the Ti-C system. Dokl Phys Chem 301:689694.

  • 16. Gryadunov, AN, Shteinberg, AS, Dobler, EA 1991 High-speed impact-induced initiation of chemical reaction in the powder Ti-C system. Dokl Phys Chem 321:10091013.

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  • 17. Shteinberg AS , Berlin AA. Non-isothermal kinetics of high-temperature reactions in condensed energetic materials. In: F.J. Schelling, editor. Proc. 35th Pyrotechnics seminar; 2008. pp. 293304.

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  • 18. Shteinberg, AS, Berlin, AA 2007 Macrokinetics of heterogeneous reaction in a mixture affected by a high-velocity shock. Dokl Chem 414:145147 .

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  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)