Research on temperature rise of powder during high energy ball milling

The temperature rise of powder accompanying with heavy plastic deformation during ball milling is expected to play an important role in determining the kinetics of synthesising and the properties of the final products. In this paper, temperature rise of powder during milling was estimated by using a microforging model. Relationships between the temperature rise and the deformation work of powder and between the temperature rise of mill container and the consumed power during ball milling have been found out. The results show that the temperature rise of mill container increased rapidly with the increased milling speed, and the temperature rise of powder increased with increasing milling speed and the weight ratio of ball to powder. The temperature of mill container calculated was in accordance with tested temperature of the mill container. The maximum temperature rise of powder ΔT max is not above 125 K under the maximum milling intensity.