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S. L. Revo, O. I. Boshko, M. M. Dashevskyi, and K. O. Ivanenko
«Structural Relaxation of the Iron–Copper–Carbon Nanotubes Materials After Mechanochemical Activation»
PACS numbers: 61.05.cp, 61.46.Hk, 61.72.Cc, 61.72.Hh, 62.23.Pq, 72.15.Jf, 81.20.Wk
The processes of the defects’ accumulation and relaxation in the nanocomposite materials of Fe (80 wt.%) and Cu (20 wt.%) powders with a small addition of the multiwall carbon nanotubes (from 0.5 to 2 vol.%) are studied. The mechanochemical activation of nanocomposite components is performed in a planetary ball mill. The defects’ structures of different types are analysed by the thermopower method. The thermopower and strength values reach higher values for the samples compacted and rolled after mechanochemical activation. The main feature of all obtained thermopower dependences is the absence of saturation for both not pre-treated materials and for samples after mechanochemical activation in a ball mill that is caused by the blocking of dislocation by the interphase boundaries.