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Microuniformity of Permanent Magnets

机译:永磁体的微观均匀性

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摘要

A measurement system was developed to measure variations in the flux density normal to the pole faces of short axially‐magnetized cylindrical permanent magnets. A quartz crystal vibrated a single‐turn pickup coil to scan an area 0.028 in.×0.00002 in. at a distance of 0.010 in. from the pole face. Circumferential variation of flux density was used as the uniformity criterion. For magnets compacted from powders variations may be held to less than 4% of the average. Directional materials such as cast Alnico V show variations as high as 17%.
机译:开发了一种测量系统来测量垂直于短轴向磁化圆柱形永磁体磁极面的磁通密度变化。石英晶体使单匝拾波线圈振动,以在距磁极面0.010英寸的距离处扫描0.028英寸×0.00002英寸的区域。通量密度的周向变化用作均匀性标准。对于由粉末压实的磁体,变化可以保持在平均值的4%以下。定向材料(例如铸造的Alnico V)显示出高达17%的变化。

著录项

  • 来源
    《Journal of Applied Physics》 |1958年第3期|共2页
  • 作者

    Mendelsohn L. I.;

  • 作者单位

    Instrument Department, General Electric Company, West Lynn, Massachusetts;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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