抄録
A magnetic composite material is fabricated by rolling. Anisotropic strontium ferrite powder, Zn-22Al superplastic powder and synthetic rubber are mixed with various mixing ratio and then kneaded. The kneaded compact is rolled at temparature ranging from 50°C to 120°C. It is investigated with regard to fabrication factors such as rolling reduction, rolling temperature, mixing ratio of ferromagnetic powder and Zn-22Al superplastic one, and addition of calcium stearate on characteristics of the magnetic composite material.
The magnetic comosite material imparts flexibility under load. It is found that the optimum forming conditions are a reduction of approximately 90% and a rolling temperature of 80°C Residual flux density of the magnetic composite material almost reaches the theoretical value for a given ferrite content per unit volume. This means that orientation of the ferromagnetic powder is accomplished almost completely.
