一、前言为了满足各种磁头芯片对金属软磁合金的要求,国内外发展了硬化型坡莫合金。这类合金与坡莫合金相比,具有较高的硬度和电阻率、应力敏感性低、高频导磁率平稳等特点。因此,这类合金的应用范围不限于作各种磁头芯片,正逐渐推广应用到微电机、变压器、电源变换器、高频电 I. Preface In order to meet the requirements of various magnetic head chips for metal soft magnetic alloys, hardened permalloy has been developed at home and abroad. Compared with permalloy, these alloys have higher hardness and resistivity, lower stress sensitivity and stable high-frequency magnetic permeability. Therefore, the scope of application of such alloys is not limited to a variety of head chips, is gradually being widely used in micro-motors, transformers, power converters, high frequency