Achievement of large magnetostriction in [001]-textured Mn1-Ni CoSi/epoxy composites at room temperature
Achievement of large magnetostriction in [001]-textured Mn1-Ni CoSi/epoxy composites at room temperature
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DOI：
10.1016/j.jallcom.2022.164460
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发表时间：
2022-03
影响因子：
6.2
通讯作者：
Zhishuo Zhang;Bin Chen;Kaiwen Zhang;Shuang Pan;Y. Gong;Fenghua Chen;Zheng-yi Jiang;Feng Xu
中科院分区：
文献类型：
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作者：
Zhishuo Zhang;Bin Chen;Kaiwen Zhang;Shuang Pan;Y. Gong;Fenghua Chen;Zheng-yi Jiang;Feng Xu
MnCoSi作为一种新型的高磁致伸缩合金，在变磁转变过程中表现出较大的磁致伸缩。然而，这种合金的强度低，这是由冷却过程中马氏体相变产生的裂纹引起的。在本文中，我们将报告的MnCoSi基粉末和环氧树脂的混合物在磁场下固化是一种很有前途的方法，以提高强度，同时，保持良好的磁致伸缩性能。这里使用的MnCoSi基粉末具有低含量的Ni，这可以急剧降低驱动变磁转变所需的临界场，并将变磁转变调谐到二阶。利用这一改进，在1 T磁场下制备了具有高强度和可逆磁致伸缩的[001]织构Mn 1-xNixCoSi/环氧复合材料。所获得的磁致伸缩与著名的Terfenol-D和Fe-Ga合金的磁致伸缩相当。此外，还讨论了影响织构和磁致伸缩的因素。
As a new kind of high-magnetostriction alloy, MnCoSi shows large magnetostriction during a metamagnetic transition. However, this alloy suffers from low strength, which is caused by the cracks generated from a martensitic transformation during cooling. In this paper, we will report that curing the mixture of MnCoSi-based powders and epoxy under a magnetic field is a promising method to enhance the strength and, meanwhile, maintain good magnetostrictive property. The MnCoSi-based powders used here have a low content of Ni, which can sharply reduce the critical field needed to drive the metamagnetic transition and tune the metamagnetic transition to be second-order. Profited from this improvement, [001]-textured Mn1-xNixCoSi/epoxy composites with enhanced strength and reversible magnetostriction are produced under a magnetic field of 1 T. The obtained magnetostriction is comparable to that of famous Terfenol-D and Fe-Ga alloys. Besides, the factors that can influence the texture and magnetostriction are discussed here.