溶鉄中の酸素の活量係数におよぼす Ni, Co, W, Mo, Cr および Sn の影響 : 溶鋼中の酸素の活量について I

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The equilibrium of oxygen in liquid iron with H_2-H_2O mixtures has been studied at 1550℃, 1607℃ and 1663℃ respectively. Effects of nickel, cobalt, tungsten, molybdenum, chromium and tin on the activity of oxygen in liquid iron have been studied at 1600℃. The data obtained are summarized as follows : 1. H_2+O=H_2O logK_1[=P_<H_2O>/P_<H_2>・α_0]=7, 480/T-3.421 ⊿F^0_1=-34, 220+15.65T 2. The interaction parameter of oxygen in liquid iron, e′_0 : e′_0[=∂logf′_0/∂[%O]]=-10, 130/T+4.94 3. The effects of alloying elements on the activity coefficient of oxygen in liquid iron : e^<(Ni)>_0=∂logf^<(Ni)>_0/∂[%Ni]=+0.0053 <Ni>___-<40% e^<(Co)>_0=∂logf^<(Co)>_0/∂[%Co]=+0.0080 <Co>___-<40% e^<(W)>_0=∂logf^<(W)>_0/∂[%W]=+0.0117 W__-<20% e^<(Mo)>_0=∂logf^<(Mo)>_0/∂[%Mo]=+0.0050 <Mo>___-<10% e^<(Cr)>_0=∂logf^<(Cr)>_0/∂[%Cr]=-0.0370 <Cr>___-<12% e^<(Sn)>_0=∂logf^<(Sn)>_0/∂[%Sn]=-0.0111 <Sn>___-<14%
社団法人日本鉄鋼協会の論文
1965-02-01