Estimation of the reactivity of aluminum superfine powders for energetic applications

Young Soon Kwon, Jin Soo Moon, Alexander P. Ilyin, Alexander A. Gromov, Elena M. Popenko

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

A new quantitative method of estimating the reactivity of aluminum superfine powders for energetic applications has been suggested. The method is based on differential thermal analysis-thermogravimetry (DTA-TG) data analysis in air as oxidizers for measurement first of four reactivity parameters (temperature of intensive oxidation onset, maximum rate of oxidation, degree of conversion of metallic aluminum, and specific heat release). After the comprehensive testing of the powders, the most reactive powder was identified. The special features of the oxidation process for the most reactive samples of aluminum superfine powder, obtained with a wires electrical explosion method, are explained and a theoretical mechanism for a new phenomenon, "pulsed oxidation" of superfine aluminum powder in air, is proposed.

Original languageEnglish
Pages (from-to)277-288
Number of pages12
JournalCombustion Science and Technology
Volume176
Issue number2
DOIs
Publication statusPublished - 1 Jan 2004

Keywords

  • Aluminum superfine powders
  • Enthalpy
  • Oxidation
  • Reactivity
  • Thermal analysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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