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US07771546B2 Semi-hard magnetic material, bias material for magnetic marker, magnetic marker and production method of bias material for magnetic marker 失效
半硬磁材料，磁性标记用偏置材料，磁性标记及磁性标记偏置材料的制作方法

Semi-hard magnetic material, bias material for magnetic marker, magnetic marker and production method of bias material for magnetic marker
Abstract:
An object of the present invention is to solve the problem in hot workability caused by Cu aggregation and provide semi-hard magnetic materials having good magnetic properties, bias materials for magnetic markers, magnetic markers and production methods of bias materials for magnetic markers. The present invention provides a semi-hard magnetic material including 2.0%≦Cu≦10.0% and 0.1%≦Nb≦5.0% by mass %, the balance being Fe and inevitable impurities, and having a microstructure in which Cu phase and an intermetallic compound of Fe and Nb are dispersed. The semi-hard magnetic material of the present invention is suitable as bias materials for magnetic markers. Furthermore, the bias materials for magnetic markers can be formed by disposing bias materials for magnetic markers mentioned above so that a bias magnetic field may be applied to a magnetostrictive element for a magnetic marker.
Abstract(Chinese):

本发明的目的是解决由Cu聚集引起的热加工性的问题，提供具有良好磁性的半硬磁性材料，磁性标记用偏置材料，磁性标记以及用于磁性标记的偏置材料的制造方法。 本发明提供一种半硬磁性材料，其含有2.0％＆amp; Cu，Ni，10.0％，0.1％，Nb，Ni，5.0％质量％，余量为Fe和不可避免的杂质，并具有Cu相和 分散Fe和Nb的金属间化合物。 本发明的半硬磁性材料适用于磁性标记物的偏置材料。 此外，用于磁性标记的偏置材料可以通过设置上述磁性标记的偏置材料来形成，使得可以将偏置磁场施加到用于磁性标记的磁致伸缩元件。

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