Abstract
1. A study was made of the disintegration of molten metals in argon, helium, nitrogen, and air streams. It was found that gaseous energy carriers having low values of thermophysical parameter (II = λg ·γ0.5/η0.5) ensure that the drops remain longer in the liquid state, thereby promoting more intense comminution. 2. It was established that the intensity of disintegration of molten metals grows with increase in their heat capacity. Using iron and silver as examples, it is demonstrated that the effect of η and σ of molten metals on the resultant particle size manifests itself clearly only when similar drop cooling rates are employed. 5. It is shown that the size of the particles being formed depends on the length of the zone in which the particles remain in the liquid state; this is evidence that the process of molten metal comminution is a continuous one, taking place both in the atomization focus and outside this zone. 4. The differences in microstructure found among equal-sized 80NM alloy particles are linked with variations in the velocity of the gas stream, resulting in different particle solidification rates.
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