Abstract

This study was carried out to investigate the possibility whether Metal Injection Molding (MIM) process could be applied to 95wt.%W-3.5wt.%Ni-1.5wt.%Fe heavy alloy in order to obtain an intricate shape. Methylcellulose was used in the injection molding for binder. FeCl_2-4H_2O was added in solvent substituting Fe powder and FeCl_2 was doped on W-Ni premixed powder. When FeCl_2-4H_2O was added in solvent, the binder separation occurred for injection molding so that the matrix content was changed. Such problem was solved when FeCl_2 was doped. In this study. the debinding process did not affect residual carbon content. The sintered microsouctures as addition methods of Fe element and the sintering temperature from 1420°C to 1470°C, which are around the temperature of liquid phase formation, were observed.