Determination of major and minor elements in deformed nickel-based superalloy by closed digestion-inductively coupled plasma atomic emission spectrometry
WANG Yue1, ZHANG Jian1, WANG Qingsong1, XU Chunyi1, ZHANG Qingjian*2
1. Marine Equipment Inspection & Testing Co.,Ltd.,Qingdao 266235,China; 2. Qingdao University of Technology,Qingdao 266520,China
Abstract：There are brands of deformed nickel-based superalloy.The composition is complex and the content range of elements is wide.High content refractory elements such as chromium,molybdenum,niobium,titanium,vanadium,tungsten and zirconium not only hinder the pretreatment of sample,but also cause the influence on the determination results due to the spectral interference among elements.In experiments,the sample was dissolved with 5 mL of hydrochloric acid-nitric acid mixture,2 mL of hydrogen peroxide,and 2 mL of hydrofluoric acid.The sample was digested at 180 ℃ for 2 h in the closed system.Al 237.312 nm,Cr 206.550 nm,Cu 327.395 nm,Fe 239.563 nm,Mn 257.610 nm,Mo 203.846 nm,Nb 269.706 nm,Si 288.158 nm,Ti 337.280 nm,V 292.401 nm,W 203.000 nm and Zr 343.823 nm were selected as the analytical lines.The standard solution series were prepared by matrix matching method to eliminate the influence of matrix effect.The above elements were determined by inductively coupled plasma atomic emission spectrometry(ICP-AES).The method for the determination of 12 major and minor elements(including aluminum,chromium,copper,iron,manganese,molybdenum,niobium,silicon,titanium,vanadium,tungsten and zirconium) in deformed nickel-based superalloy by ICP-AES after digestion in closed system was established.The calibration curves of elements showed good linearity within the linear range,and the correlation coefficients were all higher than 0.999.The contents of aluminum,chromium,copper,iron,manganese,molybdenum,niobium,silicon,titanium,vanadium,tungsten and zirconium in seven certified reference materials of deformed nickel-based superalloy were determined according to the experimental method.The relative standard deviations(RSDs,n=6) of determination results were between 0.50% and 4.56%.Above twelve elements in eight certified reference materials of deformed nickel-based superalloy were determined according to the experimental method,and the found results had no significant difference with the certified values.
王越, 张菅, 王青松, 徐春一, 张庆建. 密闭消解-电感耦合等离子体原子发射光谱法测定变形镍基高温合金中主次元素[J]. 冶金分析, 2024, 44(1): 72-80.
WANG Yue, ZHANG Jian, WANG Qingsong, XU Chunyi, ZHANG Qingjian. Determination of major and minor elements in deformed nickel-based superalloy by closed digestion-inductively coupled plasma atomic emission spectrometry. , 2024, 44(1): 72-80.
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