鉄鋼中の微量炭素迅速定量法の研究 (I) : 学振法(ガス測容法)の微量炭素定量への応用

概要

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(1) In order to determine the small amounts (under 0.05%) of carbon in iron and steel, the authors modified the apparatus of the Gakushin method (gas volumetric method), reducing the volume of the gas burette from 350 ml to 60 ml, the graduation of the burette from 0.1 ml to 0.02 ml, and the dead space of the combustion tube to 50 ml. (2) For accurate and rapid measurement of the volume of carbon dioxide, drainage-correction and temperature-correction were necessary after the absorption of carbon dioxide by the potassium hydroxide solution, and the authors constructed a convenient correction table. (3) Using the authors' apparatus, 0.01 to 0.05% carbon in iron and steel could be determined with the acuracy ±0.002% within about 12 minutes. But this method had the disadvantage of needing temperature-and drainage-corrections after each measurement of gas volume.
社団法人日本鉄鋼協会の論文
1955-05-01