Non-Equilibrium Solid Solutions in Metal Systems Obtained by Mechanochemical Synthesis
TATIANA F. GRIGORIEVA, ANTONINA P. BARINOVA, EUGENE YU. IVANOV, VLADIMIR V. BOLDYREV and NIKOLAY Z. LYAKHOV
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy
of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: grig@solid.nsk.su
Pages: 687-692
Abstract
Physicochemical properties of non-equilibrium solid solutions in metal systems obtained mechanochemically are investigated by means of high-resolution microscopy, X-ray diffraction and differential scanning calorimetry (DSC). It is demonstrated that nano-crystalline non-equilibrium solid solutions possess the excess free energy due to the presence of non-equilibrium non-stoichiometric defects and high density of inter block boundaries. The whole set of these defects creates synergetic effect in chemical activity.
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