Recently, composite particles covered with different kinds of fine particles have been fabricated by several types mechanical methods in a dry phase. However, the quantitative analysis of the composite process has not yet been conducted systematically.
In this paper, a mechanical processing method called MECHANOFUSION was used to investigate the composite process with glass beads and titanium dioxide fine particles. As the first trial, the ratio of fine particles fixed onto core particles and the BET surface area of the composite particles obtatined were measured with processing time.
As a result, the composite process was described by the following two steps: The first is an adhering step for fine particles onto core particles surface, and the second is a compacting step for fine particle layers.
Furthermore, it was found that the BET surface area of the processed powder was correlated with the energy consumption per weight of material in the apparatus.