Abstract
This chapter covers the measurement of the physical properties of metal injection molding (MIM) feedstock. Characterization of the rheological, thermal behaviors will be covered, accompanied by real measured properties that exhibit the behavioral trends seen with these materials. The effect of binders and fillers will be noted. Rheological characterization will primarily revolve around the shear and temperature sensitivity of the materials using capillary rheometers. Comments will be made about general trends and expectations for such materials. Thermal characterizations will include differential scanning calorimetry work for melting and crystallization behavior, characteristics of multicomponent binder systems, and analysis of key transitions. Thermal conductivity will be covered because of the high conductivity exhibited by MIM feedstocks and the consequent effect on processability. The use of such data in computer-aided engineering (Moldflow) will be noted along with comments and cautionary notes.
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