アルゴンガス中溶融-ガスクロマトグラフ測定法による高窒素含有鋼中の窒素迅速定量法

概要

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Inert gas fusion-gas chromatographic method was applied to the determination of nitrogen in steel. The flow rate of argon used for inert gas fusion was about 830 ml/min, and the extraction was done at 2000℃ for 3 min. The condition for gas chromatograph was as follows ; column length : 2m, column temperature : 40℃, flow rate of argon : 100ml/min, and detector current : 190 mA. The absorbent was activated charcoal. Reproducibility of analytical results by proposed method has been proved to be excellent ; coefficient of variation was 0.44%. Analytical results by this method had the same accuracy as that by JIS method. Time for analysis was about 10 min. As the results, it is possible to use this method for determination of nitrogen in steel during steelmaking process.
社団法人日本鉄鋼協会の論文
1969-04-01