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发表时间：2010-01-01

发表刊物：复合材料学报

所属单位：材料科学与工程学院

卷号：27

期号：2

页面范围：1-8

ISSN号：1000-3851

摘要：To solve the conflict about the effects of particle size on
   magnetostrictive properties of polymer-bonded Terfenol-D composites
   studied by different scholars,Terfenol-D/unsaturated polyester resin
   composites were prepared with 20%volume fraction Terfenol-D powders in
   six particle-size ranges(30～53mum,53～150 mum,150～300mum,300～450
   mum,450～500 mum and 30～500mum).The static and dynamic magnetostrictive
   properties, magnetomechanical coupling coefficient, Young's modulus and
   compressive strength were tested. The results indicate that the
   composite with particles of 53～150mum distribution presents the largest
   static and dynamic magnetostrictive properties among all the five
   monodispersed distribution samples. The sample with particle size in
   30～500mum shows even larger response than that with 53～150 mum particle
   size distribution.It indicates that the particle size plays a
   double-edged sword on magnetostrictive properties of magnetostrictive
   composites.The existence of the optimal particle size to prepare
   polymer-bonded Terfenol-D composites results from the competition
   between the positive effects and negative effects of increasing the
   particle size.

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