FeCr系焼結磁性合金の交流磁気特性に及ぼす酸化物粉末添加の影響

概要

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Effects of addition of the mixed oxide powder (SiO2, CaO and Al2O3) on the magnetic properties of the low carbon Fe-13Cr-0.8Si sintered alloy were studied. The magnetic characteristics of samples in direct magnetic field degraded with addition of oxide powder, though that indicated to increase with rising the sintering temperature. On the contrary, the amplitude relative permeability of samples in alternating magnetic field was higher in the case of 0.1-0.2% addition of oxide powder than no addition one. Though the relative permeability showed a change of increase and then decrease with rising the sintering temperature, proportion of the decrease in the relative permeability at the higher sintering temperature was restrained by addition of the oxide powder. These phenomena were discussed in the relation of sintered density, porosity and electrical resistivity.
社団法人粉体粉末冶金協会の論文