Design and Preparation of Feedstock for SiCp/Cu Powder Injection Molding

For the purpose of powder injection molding of SiCp/Cu composite, it is studied that the reasonable choice of powder and binder, the determination of powder loading and the pretreatment of powder. Fabrication of feedstock is carried out by experiment, in which some issues are studied such as the temperature of mixing, the mixing sequence, the control of mixing uniformity and the control of oxidation of copper powder during the mixing. The results show that the mixing effect of powder with binder is well; the SiC particles are uniformly distributed in the Cu matrix and no obvious agglomeration of the particles exist.