Powder injection molded strontium-ferrite magnets

This work describes a methodology to evaluate the properties of sintered Sr -ferrite magnets fabricated by powder injection molding. A hysteresis was u sed to evaluate the magnetic properties of the samples after sintering. Pro perties were compared with those conventional powder metallurgy and bonded magnets. Organic solvents were used to remove binders, and it was observed that the removal efficiency of these solvents increased by raising the temp erature of the process. As an alternative to conventional debinding process es, a new technique, supercritical extraction, was used. It is a promising technology due to the high quality of the debound final parts and the absen ce of environmental pollution. From an economic point od view, this techniq ue offers a viable alternative to the conventional industrial method of sol vent extraction.