Determination of Iron Content in Ferrotungsten Alloy Powder by ICP-AES
-
摘要: 钨铁合金是性能良好的钨基金属陶瓷弥散燃料基体,铁的含量将直接影响钨铁合金的使用特性。为准确检测钨铁合金粉末中铁含量,本研究将0.1 g钨铁合金粉末采用硝酸和氢氟酸溶解,5.5 mol/L硝酸定容,实现样品完全溶解并有效消除了钨水解的影响。在电感耦合等离子体发射光谱仪上建立了钨铁粉中铁含量的检测方法。实验结果表明,仪器功率为1 300 W、雾化器流量为0.80 L/min、样品中铁含量为1.5%~15.0%时,铁元素在259.939 nm特征发射峰处强度的线性相关系数可达到0.999 985。本方法的相对标准偏差(RSD)能够达到0.45%(n=6),平均回收率在96%~107%。
-
关键词:
- 电感耦合等离子体发射光谱法 /
- 钨铁合金 /
- 铁含量
Abstract: Tungsten-ferro alloy is a kind of tungsten-based cermet dispersed fuel matrix with good properties, and the content of Fe will directly affect the service characteristics of the alloy. In order to accurately detect the Fe content in the ferrotungsten alloy powders, ferrotungsten alloy powder weighing 0.1 g is dissolved with nitric acid and hydrofluoric acid, and the 5.5 mol/L nitric acid is used for capacity determination, which can completely dissolve the sample and effectively eliminate the influence of tungsten hydrolysis. The method for the determination of Fe content in the ferrotungsten powder by inductively coupled plasm-optical emission spectrometer (ICP-OES) has been developed. The experimental results show that the linear correlation coefficient intensity at 259.939 nm of Fe element can reach 0.999 985 when the instrument power is 1 300 W, the atomizer flow rate is 0.8 L/min, and the iron content in the sample is 1.5%-15.0%. The relative standard deviation (RSD) of the method can reach 0.45% (n=6), and the average recovery of the method is between 96% and 107%.-
Keywords:
- ICP-OES /
- ferrotungsten alloy /
- Fe content
-
-
[1] 中华人民共和国工业和信息化部.钨基高比重合金化学分析方法第2部分:铁、镍、铜含量的测定电感耦合等离子体原子发射光谱法:YS/T 1603.2-2023[S].北京:冶金工业出版社, 2023. [2] 于文红. ICP-AES法测定钨合金中镍、钴、铁、锰时酸度的影响[J].光谱实验室, 1994, 11(2):52-56. [3] HLAVÁEK I, HLAVÁKOVÁ I. Multi-element analysis of ferrotungsten by inductively coupled plasma atomic emission spectrometry[J]. J Anal At Spectrom, 1986, 1(5):331-335.
[4] 成勇,彭慧仙,袁金红,等.微波消解-电感耦合等离子体原子发射光谱法测定钨基硬质合金中钴镍铁铌钽钒铬[J].冶金分析, 2013, 33(3):50-54. [5] 石爱霞,刘百利.粉末压片-X射线荧光分析钽钛钨铁合金中钽钛钨铁[J].金属材料与冶金工程, 2009, 37(6):45-47. [6] 黎福萍,钟映兰.钨铁合金中磷砷锡的联合测定[J].云南化工, 2021, 48(9):56-57.
计量
- 文章访问数: 124
- HTML全文浏览量: 8
- PDF下载量: 10