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Low eddy current loss of Terfenol-D/epoxy particulate magnetostrictive composites prepared using the particle phosphatizing treatment method
Journal of Magnetism and Magnetic Materials ( IF 2.717 ) Pub Date : 2020-04-04 , DOI: 10.1016/j.jmmm.2020.166869
Bochen Li; Tianli Zhang; Chengbao Jiang; Jianwen Gu

In this paper, Terfenol-D/epoxy particulate composites with low eddy current loss are prepared using the particle phosphatizing treatment method. A compound phosphate coating of Tb, Dy and Fe is present on the Terfenol-D particle surface after phosphatizing treatment, identified by surface morphology, composition and chemical status analyses. As a result, the DC resistivities increase by 2-3 orders of magnitude, and the interparticle eddy current loss of the particle phosphatized composites significantly decreases. Moreover, the magnetostriction of the particle phosphatized composites remains at the same level as that of the uncoated state. This research provides an approach to preparing Terfenol-D/epoxy magnetostrictive composites with low eddy current loss for high-frequency applications.

更新日期:2020-04-06

 

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