NdFeB导磁材料磁场强度

Magnetic Field of Conducting Magnetic Material of NdFeB

设计了一个闭合磁路，对内磁场声器用ＭｄＦｅＢ作永久磁体，选用Ａ３低碳钢作导磁材料时，考察了磁路气隙中磁场强度随ＭｄＦｅＢ永磁体厚度、Ａ３钢导磁体厚度的变化规律，得到了Ａ３钢在内磁场声器磁路中的导磁行为。结果表明：气隙大小、导磁片厚度、永磁体厚度对气隙处磁感应强度大小都有影响．

C A closed magnetic circuit was designed. In the circuit of speaking system, NdFeB and A3 steel were served as hard magnetic material and conducting material respectively, moreover, it has beed studied that the conducting properties of soft magnetic material of A3 low-carbon steel in different thickness. The magnetic density in the opening of the circuit was researched in different thickness of NdFeB. The experi- ment revealed that the width of opening, conducting material and hard material have much effect on the magnetic density in the opening of circuit.