Investigation of the Reaction between Fe 0 and Al,
ball milling products are strongly affected by the kind of atmosphere, while self-propagating high-temperature ones are only weakly influenced. Reaction mechanisms taking place in these cases are proposed. While ball milling involves only solid state reactions, the formation of a melt occurs under self-propagating high-temperature conditions.Structure and magnetic properties of nanocrystalline Ni Zn,,ferrite. Among these methods, ball milling method is a relatively simple technique, which allows the prepara-tion of nanostructured Ni–Zn ferrite at a relatively low temperature.10–12 Microstructure characterisation and phase transformation kinetics of Ni 0?5Zn 0?5Fe 2 O 4 ferrite powders prepared via ball milling were studied inMagnetic properties of ball-milled SrFe12O19 particles,,A large size distribution is still present even after the longest milling time, with observed particles size up to 1.1 μm. Moreover, a longer ball-milling time leads to small aggregates, as seen in Fig. 4c,d. Therefore, using ball milling to decrease the particle size and obtain homogeneous nanopowders is challenging for SrFe 12 O 19.