标准摘要
[中文适用范围]： 本部分 IEC 60404 规定了开磁路中磁性材料矫顽力的测量方法。本文件适用于矫顽力在 0.2 A/m 至 160 kA/m 之间的所有磁性材料。注：本文档涵盖的磁性材料示例包括非晶合金、纳米晶合金、所有软磁晶态材料（例如 Fe、FeSi、CoFe 和 FeNi 合金）、软铁氧体、硬磁金属、半硬磁合金（例如 FeCoTiAl、FeCoV、FeCrCo 和 AlNiCo 合金）。在测量矫顽力低于 40 A/m、具有高电导率的材料以及形状不同于椭球的试样时，需采取特殊预防措施（见附录 A）。 [外文原描述]： IEC 60404-7:2019 specifies a method of measurement of the coercivity of magnetic materials in an open magnetic circuit. This document is applicable to all magnetic materials with coercivities from 0,2 A/m to 160 kA/m. This edition includes the following significant technical changes with respect to the previous edition: Clause 1: The scope includes a more detailed description of the magnetic materials which applies to this standard; Clause 4: Figure 2 – circuit diagram for methods A and B was simplified and the fluxgate probes inside the solenoid have been added; Clause 7: Compensation for the earth’s magnetic field and for static and dynamic magnetic noise fields has been added; Clause 8: Magnetic shielding of the measuring region has been added; 9.2.2: The measuring methods for local and integral measurement of the flux in the test specimen have been separated and the limitations in size and shape of the test specimen have been considered. 9:3: The method C with a VSM (Vibrating Sample Magnetometer) has been moved from 9.3 to the Annex B. The term "complex shaped test specimen" has been replaced in several clauses by "test specimen different from ellipsoids". The character of Annex A has been changed from “informative” to “normative”.
英文名称Magnetic materials - Part 7: Method of measurement of the coercivity (up to 160 kA/m) of magnetic materials in an open magnetic circuit