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Chemistry for Sustainable Development

2009 year, number 6

Mechanical Activation of the Mixture for Self-Propagating High-Temperature Synthesis of Iron Aluminides

A. I. Letsko, T. L. Talako, A. F. Ilyushchenko, T. F. Grigorieva, N. Z. Lyakhov
Keywords: mechancial activation, self-propagating high-temperature synthesis, iron aluminide
Pages: 621-628


Effect of attritor mechanical activation on the structure and reactivity of powder mixture Fe-45 mass % Al for self-propagating high-temperature synthesis (SHS) of powders based on iron aluminides was studied. It was established that the decisive influence on the change of the mechanisms of phase formation during SHS is exerted by the level of micro-heterogeneity of the reaction mixture and the formation of nanometer-sized iron aluminides В2-FeAl and/or Fe2Al5 in mechanically activated powder mixtures.