Abstract:
A model is proposed for mechanical milling of powders that relates the applied energy to average particle size $D$ in the powders. It is shown that the milling energy is consumed for the rupture of interatomic bonds in crystalline particles and for the creation of an additional surface during powder fragmentation. The appearance of microstrains $\varepsilon$ retards powder fragmentation. Average particle size $D$ after milling decreases with increasing milling time $t$ and decreasing particle size in the initial powder or its mass $M$. The calculated results are compared to the experimental data obtained on a tungsten carbide WC powder.
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