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钛的发射光谱分析方法虽然不少,但其中难挥发杂质元素的联合测定尚嫌不足。为此,本文在参阅有关文献的基础上,研究了在台阶孔穴电极中部分钡盐和氟化物的缓冲作用,通过普通型和杯型电极的观测比较,以含BaF_2的碳粉作缓冲剂,采用台阶孔穴杯型电极测定为佳。仪器与工作条件色散率为3埃/毫米的平面光栅摄谱仪,三透镜照明系统,狭缝20微米,遮光板5毫米。直流电弧,15安,阳极激发。预燃40秒,曝光60秒。上电极为锥形,下电极为台阶孔穴(上孔φ4×2.5×0.6,下孔φ2×1×1.6),粗颈(φ4×4)杯。天
Although there are many methods of analyzing the emission spectrum of titanium, the joint determination of difficult-to-volatile impurity elements is not enough. Therefore, based on the references, this paper studies the buffer effect of some barium salts and fluorides in stepped hole electrodes. By observing and comparing the ordinary and cup electrodes, using BaF2-containing carbon powder as buffer, The use of step hole cup electrode is better. Apparatus and working conditions Plane grating spectrograph with dispersion rate of 3 angstroms / millimeter, three-lens illumination system with slit of 20 microns and shading plate of 5 mm. DC arc, 15 A, anodic excitation. Pre-ignition 40 seconds, exposure 60 seconds. The upper electrode is tapered, the lower electrode is a step hole (upper hole φ4 × 2.5 × 0.6, lower hole φ2 × 1 × 1.6), thick neck (φ4 × 4) cup. day