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应用科学学报 ›› 1996, Vol. 14 ›› Issue (4): 427-431.

• 论文 • 上一篇    下一篇

Fe-29wt% Ni合金超细微粒的压力效应

陈允鸿1, 陈庆琉1, 邓桂昌1, 陆怀先2, 都有为2   

  1. 1. 扬州大学师范学院;
    2. 南京大学
  • 收稿日期:1995-03-30 修回日期:1995-09-21 出版日期:1996-12-31 发布日期:1996-12-31
  • 作者简介:陈允鸿:教授,扬州大学师范学院物理系,扬州 225002

PRESSURE EFFECT OF Fe-29wt% Ni ALLOY ULTRAFINE PARTICLES

CHEN YUNHONG1, CHEN QINGIU1, DENG GUICHANG1, LU HUAIXIAN2, DU YOUWE2   

  1. 1. Yangzhou University;
    2. Nanjing University
  • Received:1995-03-30 Revised:1995-09-21 Online:1996-12-31 Published:1996-12-31

PDF

55

被引次数

3

摘要： 利用蒸发冷凝法,制备了不同平均粒径的Fe-29wt% Ni合金超细微粒.在不同压强下,将超细微粒压制成片和小圆环.随压强增大,马氏体体积分数和比饱和磁化强度σs明显增大,而矫顽力Ho呈线性下降.复数磁导率随压强变化而变化,其高频特性远优于块材料.压力效应与平均粒径d大小密切相关.

关键词: 超细微粒, 压力效应, Fe-Ni合金

Abstract: Fe-29wt% Ni alloy ultrafine particles with different average sizes are prepared using the evaporation-condensation method. Under different pressures, the ultrafine particles are compressed into round small rings.As the pressure increases, martensitic volume fraction and specific saturation magnetization,σs, exhibit amarked increase,whereas corecivity, Hc shows a linear decline. The complex permeability varies with the Pressure. Its high frequency characteristic is much superior to that of the bulk.There is a close relationship between for pressure effect and the average size, d.

Key words: Fe-Ni alloy, ultrafine particle, pressure effect