高频炉燃烧-红外吸收光谱法测定高镍耐蚀合金中碳硫

High Frequency Furnace Combustion-IR Spectrometric Determination of Carbon and Sulfur in High Nickel Corrosion Resistant Alloys

提出了高频炉燃烧-红外吸收光谱法测定高镍耐蚀合金中碳硫的方法,对试验条件进行了优化,选择钨锡混合助熔剂用量为0.6 g,样品称样量为0.5 g,碳的分析时间为35 s,硫的分析时间为60 s。取标准样品(IARM 67B,IARM 69C,IARM 60B)进行准确度和精密度试验,测定结果与认定值相符,碳和硫的相对标准偏差(n=10)分别小于4%和30%。

A method for the determination of carbon and sulfur in high nickel corrosion resistant alloys by high frequency furnace combustion-IR spectrometry was proposed.The optimum experimental conditions were found as follow： ① amount of mixed flux of W and Sn： 0.6 g;② amount of sample： 0.5 g;③ analytical time for carbon： 35 s;④ analytical time for sulfur： 60 s.Tests for accuracy and precision were made with standard samples of IARM 67B,IARM 69C and IARM 60B,giving results in consistency with the standard values.Values of RSD′s（n=10） of carbon and sulfur found were less than 4% and 30%,respectively.