鐵鋼中の微量炭素迅速定量法の研究 (II) : 中和滴定法

概要

論文の詳細を見る
In order to determine rapidly the small amounts (under 0.05%) of the carbon in iron and steel without using any complicated apparatus, the authors studied the titration method. (1) For the purpose of increasing the absorption efficiency of the carbon dioxide, the helical-type absorption tube (length about 1.6m, inside diameter of tube 4mm, diameter of turn 8cm, number cf turn 6) was used instead of the ordinary vertical type. (2) The results of comparison of the absorption solutions (N/100 KOH, N/100 NaOH, N/100 Ba(OH)_2) indicated that potassium hydroxide and sodium hydroxide solutions were most suitable. (3) The best rate of the oxygen flow at the carbon dioxide detection bulb was 40 ml per minute. (4) By the above method, 0.01 to 0.05% carbon in iron and steel could be determined with the accuracy of ±0.001% within 17 to 23 minutes. (5) The authers'method was recommendable for the control analysis in the plant.
社団法人日本鉄鋼協会の論文
1955-06-01