ジスプロシウムは、銀白色で光沢のある希土類金属であり、常温では固体である。融点は1412 ℃、沸点は2567 ℃である。比較的柔らかく、延性に富み、標準条件下では揮発性が低い。これはランタノイド元素および重希土類金属に分類される。ジスプロシウムは主に合金添加剤として使用され—特にネオジム・鉄・ホウ素(NdFeB)系永久磁石において—耐磁力(コーサビティ)および熱的安定性を向上させるために用いられる。主な応用分野には、電気自動車および風力タービン向けの高効率モーターや発電機があり、また中性子吸収断面積が大きいため、原子炉の制御棒にも使用される。
Dysprosium is most commonly used as in Neodymium-iron-boron high strength permanent magnets. While it has one of the highest magnetic moments of any of the rare earths (10.6uB), this has not resulted in an ability to perform on its own as a practical alternative to Neodymium compositions.It is however now an essential additive in NdFeB production. It is also used in special ceramic compositions based on BaTiO formulations.Dysprosium is used, in conjunction with Vanadium and other elements, in making laser materials and commercial lighting. Nanofibers of Dysprosium compounds have high strength and large surface area. Therefore, they can be used to reinforce other materials and as a catalyst.Recent research has examined the use of Dysprosium in Dysprosium-iron-garnet (DyFeG) and silicon implanted with Dysprosium and Holmium to form donor centers.Dysprosium Metal is an important additive for NdFeB permanent magnets to raise the Curie temperature and improve temperature coefficiency. Another most promising use of high purity Dysprosium Metal is in the magnetostrictive alloy TEFENOL-D. There are also other applications for some special master alloys. Dysprosium Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder. It is highly susceptible to magnetization, they are employed in various data-storage applications, such as in hard disks.
銀灰色の粉末
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