Fe-based Sintered and Composite Soft Magnetic Materials

The operating frequency in an application is limited by the resistivity of the material, which is increased beyond that of pure and dense Fe, primarily by varying the type and concentration of alloying elements. Density and crystal structure have a major impact on the magnetic properties, but only a minor effect on the resistivity. The sintered materials have a resistivity ranging from 10 to 80 cm and are applicable in DC and very 

It is useful to note that the evaluation of a large number of test data of sintered soft magnetic materials yields consistent empirical relations. For sintered Fe products these are  

Density g (gem- ) Sintering conditions temp. (°C), atm. Induction at 1200Am-i (T) Coercitivity He (Am-l) Remanence Br(T) Max. rel. permeability t raax 

Measured from a maximum applied magnetic field strength of 1200 A/m. 

Density g Sintering conditions Coercitivity Remanence Sat. induction Max. rel. permeability 

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