Dispersion and Compounding Process of Particulate Ag and Fine Ni Powder Using a High-speed/High-shear Mill

Abstract

A dry powder coating method has been applied to develop high-performance contact-material for the electrical industry. Using a high-speed/high-shear type of mill, the dispersion and compounding process of particulate Ag and nano-scale Ni powder were investigated. The transformation of the particles throughout the process were indicated by the torque and temperature curve during the treatment in the mill. The optimum conditions for both dispersion of fines into the matrix and sintering process were discussed based on the physical properties of bulk powders and sintered composite.