This article is cited in 61 papers

Solid-state combustion in mechanically activated SHS systems. II. Effect of mechanical activation conditions on process parameters and combustion product composition

M. A. Korchagin, T. F. Grigorieva, B. B. Bokhonov, M. R. Sharafutdinov, A. P. Barinova, N. Z. Lyakhov

Siberian Division, Russian Academy of Sciences, Institute of Solid-State Chemistry and Mechanochemistry, Novosibirsk, 630128

Abstract: The effect of mechanical activation conditions in a planetary ball mill on the main parameters of SHS-processes and combustion product composition was studied for Ni + 13 wt.% Al and Ni + 45 wt.% Ti compositions. From results of experiments at elevated initial temperatures, it is concluded that because of reverse quenching, the defects produced by mechanical activation are not annealed in the heating zone and are retained in the sample until the beginning of chemical interaction in the leading zone of the SHS wave. The process of annealing of the activated samples was studied in situ on a transmission electron microscope and a synchrotron radiation diffractometer. The energy stored in the samples as a result of mechanical activation is estimated by calorimetric studies.

Keywords: SHS, mechanical activation, electron microscopy.

UDC: 541.124

Received: 25.03.2002

 English version: Combustion, Explosion and Shock Waves, 2003, 39:1, 51–58

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