火花放电原子发射光谱法测定镍基合金中12种元素

Determination of 12 Elements in Nickel-based Alloys by Spark Discharge Atomic Emission Spectrometry

化学元素的含量及其变化影响镍基合金材料的各项性能。因此准确检测镍基合金化学成分并对其严格控制,对提高和保证镍基合金材料性能具有重要意义。通过对仪器分析条件进行优化,采用控制样品法,建立了用火花放电原子发射光谱法测定镍基合金中Al、C、Cr、Co、Cu、Fe、Nb、P、Si、S、W、Mo等12种元素含量的方法。采用优化的吹氩时间6 s、预燃时间6 s、积分时间8 s等实验条件测定了3种常规镍基合金样品,测定值与现行国家标准分析方法结果一致。

The contents of chemical elements and their changes affect the properties of nickel-based alloy materials.Therefore,the accurate detection and strict control of the chemical composition of nickel-based alloys are of great significance to improve and guarantee the properties of nickel-based alloys.By optimizing the parameters of the instrument and using sample control method,a method for determining the contents of Al,C,Cr,Co,Cu,Fe,Nb,P,Si,S,W and Mo elements in nickel base alloy by spark discharge atomic emission spectrometry was established.The optimized test conditions are as follows:argon-blowing time 6 s,pre-combustion time 6 s,the integral time 8 s.Three kinds of conventional nickel base alloy samples were analyzed by this method.The measured values are consistent with the results of the current national standard analytical methods.