升高温下硬磁材料的磁性能 测量方法

[中文适用范围]： 本技术报告提供了在高温下测量硬磁材料的方法。硬磁材料（永磁材料）在 IEC 60404-1 中进行分类，其属性在 IEC 60404-8-1 中指定。 IEC 60404-5（闭磁路）和 IEC 60404-7（开磁路）分别规定了室温下硬磁材料磁性能的测量方法。硬磁材料的应用现在正在扩展到高温，因此需要指定并保证这些材料在其工作温度范围内的磁性。在 IEC 60404-8-1 中，除了最大磁能积 ((BH)max)、剩磁 (Br)、S 矫顽力 (HcB) 等基本属性外，还规定了剩磁（或饱和）和 J 矫顽力的温度系数。 ）。 J-矫顽力 (HcJ)、反冲磁导率 (μrec) 和密度。 [外文原描述]： Provides methods for measuring magnetically hard materials, at elevated temperatures. Magnetically hard materials (permanent magnet materials) are classified in IEC 60404-1 and their properties are specified in IEC 60404-8-1. The methods of measurement of the magnetic properties of magnetically hard materials at room temperature have been specified in IEC 60404-5 for closed magnetic circuits and in IEC 60404-7 for open magnetic circuits, respectively. The applications of magnetically hard materials are now expanding to elevated temperatures and it is therefore required to specify and guarantee the magnetic properties of these materials over their working temperature range. In IEC 60404-8-1 temperature coefficients of remanence (or saturation) and J-coercivity have been specified in addition to basic properties such as maximum magnetic energy product ((BH)max), remanence (Br), B-coercivity (HcB), J-coercivity (HcJ), recoil permeability (µrec) and density.