点击次数：

论文类型：期刊论文

发表时间：2011-02-01

发表刊物：JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

收录刊物：SCIE、EI

卷号：323

期号：3-4

页面范围：351-355

ISSN号：0304-8853

关键字：Magnetostrictive composite; Terfenol-D; Dry process; Uniform

摘要：To improve the uniformity of the magnetostrictive properties of Terfenol-D composites along the field direction, a dry method is developed in the present study. We examined the compaction pressure, particle volume fraction, particle size and composite configuration as factors that affected the magnetostrictive properties of the composites. The experimental results indicated that the magnetostrictive properties were improved with the increase of compaction pressure and particle volume fraction. In addition, larger average particle size was shown to result in more pronounced magnetostrictive properties. The particle alignment due to the orientation field is beneficial for the promotion of the magnetostrictive properties. The largest saturation magnetostriction and the maximum piezo-magnetic coefficient in the absence of a mechanical preload was obtained at 1005 ppm and 4.08 nm/A, respectively, for the aligned composite including a particle volume fraction of 77% and an average particle size of 210 mm. (C) 2010 Elsevier B.V. All rights reserved.