电感耦合等离子体发射光谱法测定镨钕钆合金中稀土杂质量  

Determination of rare earth impurities in praseodymium-neodymium-gadolinium alloy by coupled plasma atomic emission spectrometry

作　　者：刘春[1,2] 高励珍[1,2] 张翼明[1,2] 刘晓杰[1,2] LIU Chun;GAO Lizhen;ZHANG Yiming;LIU Xiaojie(State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou014030,Nei Mongol,China;National Engineering Research Centre of Rare Earth Metallurge and Function Materials,Baotou 014030,Nei Mongol,China)

机构地区：[1]包头稀土研究院白云鄂博稀土资源研究与综合利用国家重点实验室,内蒙古包头014030 [2]稀土冶金及功能材料国家工程研究中心,内蒙古包头014030

出　　处：《金属功能材料》2021年第4期59-63,共5页Metallic Functional Materials

摘　　要：镨钕钆合金因其稳定的化学成分、较低含量的有害元素等优点,而作为镨钕金属和金属钆的替代原料用于稀土磁性材料的生产。试样以硝酸溶解,直接以氩等离子体光源激发,进行光谱测定,以基体匹配法校正基体对测定的影响。干扰实验表明,在选定的特征谱线下,共存元素对待测元素的影响可忽略不计;实验选择的镨、钕、钆配比可有效消除基体元素相对含量变化时,对测定结果产生的影响用于合成样品中稀土杂质测定的方法,结果的相对标准偏差(RSD,n=10)小于10%。按照选定的实验条件,进行标加回收实验,回收率在95.0%~120.0%之间。采用ICP-MS法和本方法进行方法比对,测定结果基本一致。The praseodymium-neodymium-gadolinium alloy have advantages of stable chemical component and low concentration of harmful elements. Therefore, praseodymium-neodymium alloy and Gd could be replaced by the alloy, which were raw materials of yieldding magic materials Nd-Fe-B. The praseodymium-neodymium-gadolinium alloy sample was dissolved in nitric acid and rare earth impurities in the sample were detected by ICP-OES with the matrix matching method. Interference experiments showed that coexisting element interference could be ignored for the chosen spectrum lines, and the change of praseodymium neodymium gadolinium relative ratio had little effect on determination results.The method was successfully used to determine synthetic sample with RSD no more than 10%(n=10) and recovery between 95.0%~120.0%. The comparision experiments’ results of ICP-OES and ICP-MS were essentially consistent.

关 键 词：镨钕钆合金 稀土杂质 电感耦合等离子体发射光谱法 基体匹配 

分 类 号：TG115.33[金属学及工艺—物理冶金]