Mechanochemistry is concerned with physicochemical transformations
of substances in all states of aggregation, which is produced
by the effect of mechanical energy (Heineke, 1984). There is
another frequently used term in mechanochemistry-mechanical
activation and the multi-stage character of it requires highenergy
mills with different working regimes (compression, shear,
impact) (Balázˇ et al., 2013). The principles of the most frequently
used mills are shown in Fig. 3A. There are several variables influencing
the milling process, e.g., type of the mill, material of milling
media, ball-to-powder ratio, filling extent of the milling chamber,
milling atmosphere, milling speed, milling time, etc.