溶融鉄合金の水素溶解度

概要

論文の詳細を見る
The solubility of hydrogen in liquid pure iron and liquid binary iron alloys has been measured by Sieverts' method and by the sampled method. By Sieverts' method the solubility of hydrogen in liquid Fe-C-Si alloys has also been measured. The results obtained by Sieverts' method are summarized as follows : (1) Solubility of hydrogen in liquid pure iron : log[%H]=-1874/T-1.601 (T : 1843∿2013°K) (2) Interaction parameter in liquid binary iron alloys : e^<(Al)>_H=+0.0092 (Al<6%, 1550∿1650℃) e^<(Mo)>_H=+0.0048 (Mo<5%, 1550∿1600℃) e^<(C)>_H=+0.053 (C<2%, 1450∿1650℃) e^<(S)>_H=+0.017 (S<1%, 1550∿1600℃) e^<(Cr)>_H=-0.0022 (Cr<20%, 1550∿1650℃) e^<(Sl)>_H=+0.033 (Si<2.5%, 1550∿1600℃) (3) The experimental results on activity coefficients of hydrogen in liquid Fe-C-Si alloys are in rather good agreement with the values calculated by using Wagner's equation than those obtained by the graphical method. The solubility of hydrogen obtained by the sampled method shows the satisfactory agreement with the value obtained by Sieverts' method in the case of Fe-Cr, Fe-Mn and Fe-Mo alloys, but distinct difference is shown in Fe-S alloys.
社団法人日本鉄鋼協会の論文
1970-04-01