グロー放電発光分光法による Zn-Fe/Zn-Ni 2 層型合金めつき鋼板の定量分析(表面処理分析小特集)

概要

論文の詳細を見る
Double-layer electroplated steel sheet composed of upper Zn-Fe alloy and lower Zn-Ni alloy is analysed quantitatively using glow discharge spectrometry (GDS). Increase of discharge current and decrease of Ar pressure, i.e., increase of discharge energy, improves depth resolution. Excess in energy, however, makes discharge unstable and deteriorates depth resolution. As the optimum discharge condition, 30 mA and 22 mbar is adopted. For each element, integrated value of emission intensity and coating weight are linearly related. Accuracy of these calibration curves (σd) is 1.5g/m^2 for 10∿50g/m^2 of Zn, 0.15g/m^2 for 1∿7g/m^2 of Ni, and 0.34g/m^2 for 2∿14g/m^2 of Fe. In this experiment, no effect of co-exsisting elements on the emission intensity of Zn is observed. Coating weight and composition of each layer obtained by GDS agree well with those analysed by atomic absorption spectrometry. These results show that GDS can be applied to the quantitative analysis of this product.
社団法人日本鉄鋼協会の論文
1986-09-01