<報文>溶融鉄の窒素溶解度に及ぼす酸素の影響

概要

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The solubility of nitrogen in molten iron with various oxygen contents was measured over the temperature range from 1,750℃ to 2,000℃. The measurements were carried out by using a levitation melting furance and a rapid quenching device, which had pendulum, piston and anvil equipment. By this quenching, the sample obtained was in the form of thin disc approximatly 50μ thick and 5 cm in diameter. The oxygen contents of the quenched samples were analysed by Coulomb's titration method, and the nitrogen contents by micro Kjeldhal method. The difference of oxygen contents between these samples with different thicknesses was reduced to less than 10 ppm by polishing these surfaces. Interaction parameter of nitrogen with oxygen, e_N^<(0)> was obtained as about zero on the average in the above temperature range, which is consistent with the value obtained by Schenck et al. in the lower temperature range.
東北大学の論文
1972-03-25