火花放电原子发射光谱法测定钛合金中11种元素  

Determination of 11 elements in titanium alloy by spark discharge atomic emission spectrometry

作　　者：连危洁 翟宇鑫 田兆永 李爽 马兰[1] LIAN Weijie;ZHAI Yuxin;TIAN Zhaoyong;LI Shuang;MA Lan(Ningbo Branch of China Academy of Ordnance Science,Ningbo 315103,China;Ningbo Surface Engineering Research Institute Co.,Ltd.,Ningbo 315000,China)

机构地区：[1]中国兵器科学研究院宁波分院,浙江宁波315103 [2]宁波表面工程研究院有限公司,浙江宁波315000

出　　处：《冶金分析》2025年第2期56-63,共8页Metallurgical Analysis

基　　金：宁波市“科技创新2025”重大专项(2019B10047)。

摘　　要：钛合金中合金元素及杂质元素含量的准确测定对其产品的性能研究和质量控制具有重要的意义。实验使用车削或铣削制备样品;在校正了共存元素干扰后,选择Al 396.110 nm和Al 394.403 nm、Cr 425.433 nm和Cr 313.210 nm、Cu 324.710 nm和Cu 510.514 nm、Fe 259.940 nm、Mn 257.660 nm和Mn 293.310 nm、Mo 386.411 mm和Mo 281.610 nm、Ni 231.604 nm、Si 288.158 nm、Sn 147.510 nm和Sn 317.505 nm、V 437.924 nm和V 290.810 nm、Zr 357.247 nm作为分析谱线;采用一系列钛合金光谱标准样品绘制校准曲线,拟合并优化校准曲线;建立了火花放电原子发射光谱法测定钛合金中铝、铬、铜、铁、锰、钼、镍、硅、锡、钒、锆等11种合金及杂质元素的方法。各元素校准曲线的决定系数均大于0.999;方法检出限为0.000 03%~0.002 94%;按照实验方法测定钛合金标准样品中11种元素,结果的相对标准偏差(RSD,n=11)为0.31%~4.9%,各元素测定结果与标准值的相对误差(RE)绝对值均不大于8.1%;对比分析了3个牌号的钛合金样品,采用实验方法测定,结果与YS/T 1262—2018测定值基本一致。The accurate determination of alloying elements and impurities in titanium alloy is important for the performance study and quality control of alloy products.In experiments,the samples were prepared by turning or milling.After correcting the interference of coexisting elements,the analytical lines of each element were selected,i.e.,Al 396.110 nm and Al 394.403 nm,Cr 425.433 nm and Cr 313.210 nm,Cu 324.710 nm and Cu 510.514 nm,Fe 259.940 nm,Mn 257.660 nm and Mn 293.310 nm,Mo 386.411mm and Mo 281.610 nm,Ni 231.604 nm,Si 288.158 nm,Sn 147.510 nm and Sn 317.505 nm,V 437.924 nm and V 290.810 nm,Zr 357.247 nm.A series of standard samples of titanium alloy for spectral analysis were used to draw the calibration curves,which were then fitted and optimized.A method for the determination of 11 alloying elements and impurities including aluminum,chromium,copper,iron,manganese,molybdenum,nickel,silicon,tin,vanadium and zirconium by spark discharge atomic emission spectrometry was established.The determination coefficients of the calibration curves were all greater than 0.999.The limits of detection were between 0.00003%and 0.00294%.The contents of eleven elements in the standard samples of titanium alloy were determined according to the experimental method,the relative standard deviations(RSD,n=11)of determination results were between 0.31%and 4.9%.The absolute value of relative errors(RE)between the determination results and standard values of elements were not more than 8.1%.Three grades of titanium alloy samples were analyzed and compared.The samples were determined according to the experimental method,and the found results were basically consistent with those obtained by YS/T 1262-2018.

关 键 词：火花放电原子发射光谱法 钛合金 合金及杂质元素 校准曲线 类型标准化 

分 类 号：O657.31[理学—分析化学] TF801.3[理学—化学]