Effect of milling parameters on morphology and grain size of WO_3 and Al particles for fabricating WO_3/Al composites

摘要

In this paper, the milling process of WO_3 and aluminum particles is studied. Influences of rotate rate, milling time and ball-to-powder weight ratio on the morphology and grain size of the particles are studied by scanning electronic microscope and X-ray diffraction techniques. Al particle size decreases firstly and then increases with increasing milling time, while Al grain size decreases gradually as the milling time increases. WO_3 particle is distributed uniformly in Al particles after milling for 9h, and has no marked change as further extension of milling time. With increasing the ball-to-powder weight ratio and rotate rate, both particle size and grain size of Al decreases. Milling parameters have almost no effect on the grain size of the WO_3 particles.