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Effect of mechanical activation on SHS: Physicochemical mechanism

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Abstract

Mechanically activated SHS (MASHS) is currently a subject of extensive investigation but up to now a mechanism of strong influence of mechanoactivation (MA) on subsequent SHS is not well understood. In this work, a system of relatively simple estimates is developed to analyze the physicochemical mechanism of the effect of preliminary MA on SHS, in particular, the role of the stored energy of cold plastic deformation and that of accumulated point defects. Brief analysis of the known MASHS theories is presented. A qualitative explanation of the effect of MA on SHS is proposed based on the modern theory of deformation-enhanced interdiffusion during MA and state-of-the-art conceptions of solid-state nucleation in the field of concentration gradient.

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  1. Physicotechnical Institute, National Academy of Sciences of Belarus, ul. Kuprevicha 10, Minsk, 220141, Belarus

    B. B. Khina

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Khina, B.B. Effect of mechanical activation on SHS: Physicochemical mechanism. Int. J Self-Propag. High-Temp. Synth. 17, 211–217 (2008). https://doi.org/10.3103/S1061386208040018

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  • DOI: https://doi.org/10.3103/S1061386208040018

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