発光分光分析法によるステンレス鋼中のホウ素の定量

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A rapid and accurate point-to-plane technique has been developed for the spectrographic determination of boron in austenitic stainless steel in the concentration range 0.015 to 0.25%. In this paper, the past literatures reporting on the spectrochemical analysis of boron in steel are cited and full details are given of the experimental procedure. The data were evaluated by a thorough statistical study. Volatilization characteristics of boron, iron, and the elements of counter electrodes were investigated by a moving-plate study in various arc sources. The analysis was performed with a 3.4M Ebert type grating spectrograph using an intermittent a. c. arc operating at 220V, with copper counter electrode, arc current of 6A, and exposure time of 20S after 10s pre-arc. The analytical line pair is Fe12487.06A/B12496.78A. The relative standard deviation for the determination ranged from 3 to 75%. The analytical results are found to be in good agreement with the results of wet chemical determinations. An account is also given of thermal effects on boron in boron-steel in the process of sampling and/or arcing. A simple procedure for the selection of analytical line pair and a calibration method using an element in counter electrode as internal standard are proposed.
社団法人日本鉄鋼協会の論文
1964-11-01