Cu-Ti-B Composite Powder Prepared by Mechanical Alloying

Taking Cu, Ti and B powder as raw material, Cu-Ti-B composite powder was prepared by mechanical alloying (MA). The phase, microstructure of the powder during MA process was studied by XRD and SEM, and combining the flour yield to study the best ball mill time. The result shows that: Early ball milling, powder particle size drops rapidly. Extruding and shearing force between grinding balls, plastic deformation of sheets. After 15h, XRD diffraction peak intensity decrease stabilize, particle size reduce to around 20 um. Ball milling after 20 h, powder refining trend slowing, produce powder together. Considering the efficiency of ball milling and powder particle size requirements, determine the best ball milling time for 15 h.