Determination of aluminum,niobium,titanium,vanadium and zirconium in AlNbTiVZr high entropy alloy by inductively coupled plasma atomic emission spectrometry
ZHU Xi1,2, GUO Yong1
1. College of Chemistry, Sichuan University, Chengdu 610064,China; 2. Chengdu Advanced Metal Materials Industry Technology Research Institute Co., Ltd.,Chengdu 610300,China
Abstract：The atomic number ratio of each main element in AlNbTiVZr alloy needs to reach 1∶1∶1∶1∶1 to produce high entropy effect. For the determination of main elements in multi-element alloys, the classical chemical analysis methods usually have many interferences,cumbersome separation operations, and long processes. The sample was dissolved with HF-HNO3. Al 396.152 nm,Nb 269.706 nm,Ti 323.657 nm,V 292.402 nm and Zr 327.305 nm were selected as the analytical lines, and Y 371.030 nm was selected as the internal standard line. A method for the determination of high content aluminum,niobium,titanium,vanadium and zirconium in AlNbTiVZr alloy by inductively coupled plasma atomic emission spectrometry(ICP-AES) was established.The detection range of the method was as follows: 7.50%-17.50% for aluminum, 25.00%-40.00% for niobium, 15.00%-25.00% for titanium,15.00%-25.00% for vanadium, and 15.00%-35.00% for zirconium, respectively. The linear correlation coefficients of calibration curves were all higher than 0.999. The contents of aluminum, niobium, titanium, vanadium and zirconium in two AlNbTiVZr alloy samples were determined according to the experimental method,and the relative standard deviations (RSD, n=6) of determination results were less than 1.0%.The trueness test was conducted on another two AlNbTiVZr alloy samples,and the found results were consistent with those obtained by the standard methods.
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