WARM COMPACTION OF AN Fe-Si/Fe POWDER MIXTURE

Abstract

In this study, we present high-density nanostructured Fe-Si/Fe-based soft/soft composite, prepared by the warm compaction method. Ball-milled Fe-33Si (a/o) powder, pure Fe powder, and polyvinyl pyrrolidone (PVP) were mixed in an acetone solvent to create a powder mixture and then compacted at various temperatures and pressures. Sample densities were obtained up to a 90% theoretical value. The warm-compacted sample prepared at 650 MPa and 240 oC for 1h had the highest compaction properties in comparison with other samples prepared at pressures of either 300 or 400 MPa, and at room temperature or 120°C.