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Terfenol-D

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Terfenol-D,是一种磁致伸缩材料,该合金化学式为TbxDy1-xFe2 (x ~ 0.3)。它最早由美国海军军械实验室英语Naval Ordnance Laboratory在1970年代开发。1980年代在美国海军的资助项目下,埃姆斯实验室改进了该材料生产技术的效率。它得名于terbium()、Fe()、海军军械实验室的缩写NOL,以及代表Dysprosium()的D。

它有高的磁弹性和磁致伸缩系数,最初应用于海军声呐系统,后来应用于磁机械传感器、执行器、换能器以及超声波传感器等。

因为磁致伸缩执行器能产生高压力,它也被考虑应用于柴油机的燃料喷射器。

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Terfenol-D
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