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一、前言: 高合金钢中高硅的测定,文献中是以王水溶解试样,控制温度在60～70℃,以氢氟酸处理,在温水浴中保温1分钟,这样在12分钟以上才能得出分析结果,配备炉前分析有局限局。我们作了改进,可以在6～7分钟内能得出满意的结果。试样用王水和氢氟酸混合溶液,置于装有螺帽封闭的塑料奶瓶,于沸水浴中加热快速溶解,于溶解过程中,部分SiF_4蒸汽遇塑料瓶壁可以冷凝溶解溶液内,丝毫不被挥发。此外,氢氟酸能起到快速溶解的作用,简化手续。多余的氢
First, the preamble: Determination of high-alloy steel in the high-silicon, the literature is dissolved in aqua regia samples, control the temperature at 60 ~ 70 ℃, hydrofluoric acid treatment, incubated in warm water bath for 1 minute, so more than 12 minutes Obtain the result of the analysis, equipped with furnace front analysis has limited bureau. We made improvements to get satisfactory results in 6 to 7 minutes. Sample with aqua regia and hydrofluoric acid mixed solution, placed in a closed cap with a plastic bottle, heated in a boiling water bath dissolved quickly, in the dissolution process, some of the SiF_4 steam meets the plastic bottle wall can be dissolved in the solution, the slightest Not volatile. In addition, hydrofluoric acid can play a role in rapid dissolution, to simplify procedures. Excess hydrogen