Warm compaction of Fe-Si/Fe powder mixture

초록

3-D shape Soft magnetic composite parts can be formed by general compaction method of powder metallurgy. In this letter, high density nanostructured Fe-Si/Fe composite prepared by a warm compaction method was presented. Ball-milled Fe-20wt.%Si powder, pure Fe powder and polyvinyl pyrrolidone (PVP) were mixed in acetone solvent and then the powder mixture was compacted at temperature and pressures. Density of samples up to 90% theoretical value has been obtained. The warm compacted sample prepared at 650MPa and 240oC had highest compaction properties in comparison with other compacts at 300, 400MPa and room temperature, 120 and 180oC.