电感耦合等离子体发射光谱(ICP-OES)法测定镍-铬基高温合金GH4133B中铝、铌、钛、铬、铁  

Determination of Aluminium,Niobium,Titanium,Chromium,Iron in GH4133B Ni-Cr Superalloys by ICP-OES

作　　者：罗枫 LUO Feng(Baoji Titanium Valley New Material Testing & Technology Center Co.Ltd.,Baoji,Shaanxi 721013,China)

机构地区：[1]宝鸡钛谷新材料检测技术中心有限公司,陕西宝鸡721013

出　　处：《中国无机分析化学》2020年第4期59-62,共4页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：GH4133B是Ni-Cr基沉淀硬化型变形高温合金,近年来我国还没有适宜的国家检测标准,基于此对样品主要元素含量准确测定方法进行了研究和探讨。采用盐酸-硝酸体系对GH4133B镍基高温合金进行溶解,确定了盐酸和硝酸比列为8∶3,混合酸用量为11 mL,用ICP-OES法快速准确地对GH4133B镍基高温合金中铝、铌、钛、铬、铁元素含量进行测定;确定了各元素分析谱线为Al 396.152 nm、Nb 309.417 nm、Ti 334.941 nm、Cr 267.716 nm、Fe 238.204 nm;建立了校准工作曲线,各元素线性相关系数均在0.999以上;优化仪器参数,消除基体干扰,测定了方法检出限,各元素检出限均小于0.003%,各元素测定结果的RSD/%在0.26%~0.47%(n=7),加标回收率在99.4%~105%。有效解决了GH4133B镍基高温合金快速有效溶解及准确测定问题。GH4133B is Ni-Cr precipitation hardening deformed Superalloys,in recent years,there is no suitable national standard in China.Based on this,the accurate determination method of the main elements in the sample was studied and discussed.The hydrochloric acid-nitric acid system was used to dissolve GH4133B nickel superalloys,the hydrochloric acid-nitric acid radio was 8∶3 with mixed acid dosage of 11 mL.The contents of aluminium,niobium,titanium,chromium,and iron in GH4133B nickel superalloys was determined by inductively coupled plasma atomic emission spectrometry(ICP-OES).The analysis lines of aluminium,niobium,titanium,chromium,and iron were 396.152 nm,309.417 nm,334.941 nm,267.716 nm,and 238.204 nm,respectively.The calibration curve was drawing,linear correlation coefficient of all elements were greater than 0.999.Instrument parameters were optimized to eliminate matrix interference,The method detection limit was determined,each element detection limit was less than 0.003%.The relative standard deviation of determination results was between in 0.26%and 0.47%(n=7),the recovery rate was from 99.4%to 105%.The problems of fast effective dissolution and accurate determination of GH4133B nickel base superalloy are effectively solved.

关 键 词：电感耦合等离子体发射光谱法 GH4133B镍-铬基合金 高温合金 

分 类 号：O657.31[理学—分析化学] TH744.11[理学—化学]