Mechanical alloying, mechanochemical treatment

This review attempts to give a short account of the main aspects of mechanochemical treatment such as (a) mechanical alloying (b) commonly used milling units, herewith the influence of milling parameters on the rate and products of mechanochemical treatment (c) stmctural changes (d) mechanochemical reactions (e) subsequent heat treatment and (f) powder contamination. [Pg.437]

Mechanochemical treatment, as already emphasized, produces nanocrystalline/amorphous phases. Such pronounced metastable states readily react at elevated temperatures, thereby related equilibrium phases can be obtained relatively easily. For instance, high-temperature intermetallic compound AlgMos (melting point 2123 K), which, due to significantly different melting points of A1 and Mo is otherwise difficult to prepare from liquid phase, was obtained by continuous heating up to 1400 K of the mechanically alloyed Al-27 at.% Mo powder [46]. [Pg.449]