...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ISIJ international >Application of Portable Total-Reflection X-Ray Fluorescence Spectrometer to Analysis of Dysprosium in Neodymium-Iron-Boron Magnet
【24h】

Application of Portable Total-Reflection X-Ray Fluorescence Spectrometer to Analysis of Dysprosium in Neodymium-Iron-Boron Magnet

机译：便携式全反射X射线荧光光谱仪在钕铁硼磁铁矿中Analysis的分析中的应用

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dysprosium (Dy) is expected to be recovered from end-of-life neodymium-iron-boron (NdFeB) magnets in the near future because of its worldwide shortage. Therefore, the rapid on-site elemental analysis of dysprosium in end-of-life NdFeB magnets is required. Here, we report a method of measuring the dysprosium composition in a NdFeB magnet on-site using a portable total-reflection X-ray fluorescence (TXRF) spectrometer. This method leads to drastic reduction of dysprosium loss caused by dissolving a NdFeB magnet because the portable TXRF spectrometer requires a small sample volume for measurement and its detection limit is as low as the ppb level. A NdFeB magnet was dissolved into hydrochloride acid and then iron in the solution was extracted using 4-methyl-2-pentanone (methyl isobutyl ketone: MIBK). Yttrium oxide (Y_(2)O_(3)) and a diluted standard solution of rubidium (Rb) were added to the solution as internal standards. We measured the X-ray intensities of dried residue of the solution using a portable TXRF spectrometer. Dy Lα line was clearly detected in the solution, whereas it overlapped with Fe Kα line in the solution before the MIBK extraction process. The dysprosium composition in the NdFeB magnet was determined from the measured intensities of Dy Lα , Y Kα , and Rb Kα , the relative sensitivities of dysprosium and yttrium to rubidium for the portable TXRF spectrometer, and the weights of the dissolved NdFeB magnet and yttrium oxide. The calculated dysprosium composition was in good agreement with that obtained by conventional ICP-AES.
机译：由于全球范围内的短缺，预计在不久的将来会从寿命终止的钕铁硼（NdFeB）磁铁中回收（Dy）。因此，需要对NdFeB使用寿命终止磁铁中的进行快速的现场元素分析。在这里，我们报告了一种使用便携式全反射X射线荧光（TXRF）光谱仪现场测量NdFeB磁体中组成的方法。由于便携式TXRF光谱仪需要很小的样品量进行测量并且其检出限低至ppb水平，因此该方法可大大减少由溶解NdFeB磁体引起的loss损失。将NdFeB磁铁溶于盐酸中，然后使用4-甲基-2-戊酮（甲基异丁基酮：MIBK）萃取溶液中的铁。将氧化钇（Y_（2）O_（3））和a的稀释标准溶液（Rb）作为内标添加到溶液中。我们使用便携式TXRF光谱仪测量了溶液干燥残留物的X射线强度。在溶液中清楚地检测到了Dy Liα线，而在MIBK提取过程之前，它与溶液中的Fe K iα线重叠。 NdFeB磁体中的composition组成取决于便携式TXRF光谱仪测得的DyLiα，YKiα和RbKiα的强度，和钇对rub的相对灵敏度，以及溶解的NdFeB磁铁和氧化钇的重量。计算出的组成与常规ICP-AES的agreement组成非常吻合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号