pure magnetic iron

The results indicate that attaching pure iron to both ends of the GMM can enhance the working magnetic field, reduce the magnetic flux leakage, and increase the displacement output with reduced current in coil, thus improve the thermal condition of the transducer.

结果表明，在GMM棒两端安装电工软铁能够提高工作磁场强度，减少磁通泄漏，增加换能器输出位移并降低驱动电流，改善换能器的发热情况，从而整体改善超磁致伸缩换能器的性能。

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After diffusing heat treatment, iron-aluminum gradient alloy plates were prepared which had two sides with Fe-Al soft magnetic alloy layer and the centre with pure iron matrix.

浸铝后的铁板经过扩散热处理，形成两侧为铁铝软磁合金层，中间为纯铁基体的铁铝梯度合金板。

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The appropriate coil structure parameters were presented, and an optimized design scheme was proposed in which pure iron with high magnetic permeability was attached to both ends of the giant magnetostrictive material ( GMM) to reduce loss.

给出了合理的线圈结构参数，提出了在超磁致伸缩材料（GMM）棒两端安装高磁导率的软磁体和减少GMM棒涡流损耗的设计方案，并忽略了气隙的影响。

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