应用硅钼蓝分光光度法对哈氏系列合金中低硅含量的测定方法进行了研究。试样在聚四氟乙烯烧杯中用一定比例的盐酸和硝酸溶解后,加入氢氟酸,多余的氢氟酸与饱和硼酸络合反应,在680 nm波长下进行比色分析。试验结果表明,该方法稳定,数据准确,可测定哈氏系列合金中0~0.1%的低硅。 Silicon molybdenum blue spectrophotometric method was used to determine the content of low silicon in the Hastelloy series alloy. The sample was dissolved in a Teflon beaker with a certain proportion of hydrochloric acid and nitric acid, hydrofluoric acid was added, and the excess hydrofluoric acid was complexed with saturated boric acid for colorimetric analysis at a wavelength of 680 nm. The experimental results show that the method is stable and accurate in data and can measure 0 ~ 0.1% low silicon in the Hastelloy series.