Rheological behavior of W-PW-HDPE-EVA feedstock for powder injection molding

The different tungsten powder injection molding feedstocks were prepared by changing the additive concentration and tungsten powder loadings. The rheological evaluation includes the viscosity measurements and its sensitivity to the shear rate, the temperature and the binder components were studied. The viscous activation energies of some feedstocks were calculated and the mechanism of the additives effect on the rheological behavior were investigated.