具有优异室温磁致伸缩性能的Tb(Dy)-TM(TM=Fe, Ni, Co)基非晶态合金

In recent years，magnetostriction materials have received increasing attention due to their promising applications for actuators, sensors, microwave devices, Hi-Fi sets and energy harvesting devices. Therefore, to develop a novel magnetostriction material with a combination of giant magnetostriction at low magnetic fields, good corrosion resistance, good mechanical properties, and low energy loss is one of the most important challenge in this field. Most recently, our preliminary findings have demonstrated for the first time that the magnetostriction of Tb(Dy)-TM glassy ribbons exhibit giant magnetostriction effect. Based on these encouraging findings, attempts will be made to further develop Tb(Dy)-TM metallic glasses with giant magnetostriction at room temperature and good glass forming ability, and to understand their magnetostriction mechanisms. The project will not only have important applications potential, but will also have significant academic merit in understanding the magnetostriction mechanisms of amorphous materials.

近年来，磁致伸缩材料由于其在传感器、声呐、微波器件、高保真音响和能量收集器方面的应用价值而广受关注，因此开发具有低场下优异磁致伸缩性能、高抗氧化防腐蚀性能、易加工成型和低能量损耗等综合性能的磁致伸缩材料是该研究领域的热点之一。申请者拟在前期工作的基础上，从Tb(Dy)-TM二元（伪二元）合金体系出发，系统研究Tb(Dy)-TM(TM=Fe, Co, Ni)非晶态合金的形成、磁致伸缩性能及其微观机理，并开发出具有优异综合性能、特别是低场下具有较大磁致伸缩系数的非晶态合金。通过本项目的研究，不仅能揭示非晶态合金中巨磁致伸缩性能的产生机理，具有重要的基础研究价值，而且能够指导设计并开发具有优异综合磁致伸缩性能的新型非晶态材料，具有重大的工业应用前景。

近年来，磁致伸缩材料由于其在传感器、声呐、微波器件、高保真音响和能量收集器方面的应用价值而广受关注，因此开发具有低场下优异磁致伸缩性能、高抗氧化防腐蚀性能、易加工成型和低能量损耗等综合性能的磁致伸缩材料是该研究领域的热点之一。申请者在前期工作的基础上，系统研究l了Tb(Dy)-TM(TM=Fe, Co, Ni)非晶态合金的形成、磁致伸缩性能及其微观机理，并开发出具有较高磁致伸缩性能的低成本轻稀土基非晶态合金。通过本项目的研究，不仅揭示非晶态合金中巨磁致伸缩性能的产生机理，而且能够指导设计并开发具有优异综合磁致伸缩性能的新型非晶态材料。