炭素飽和溶鉄中の V, Cu, Si, P, S の拡散

概要

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Diffusion coefficients of vanadium, copper, silicon, phosphorus, and sulfur in molten iron saturated with carbon have been measured by the capillary-reservoir technique in the temperature range from 1350° to 1550℃. The results are summerized by the follwing Arrhenius' equation : D_V=(6.45±1.08)×10^<-3>exp(-(18700±600)/(RT))cm^2/sec D_<Cu>=(41.5±7.5)×10^<-3>exp(-(21700±700)/(RT))cm^2/sec D_<Sl>=(1.85±0.28)×10^<-3>exp(-(13300±500)/(RT))cm^2/sec D_P=(7.05±0.95)×10^<-3>exp(-(17700±500)/(RT))cm^2/sec D_S=(0.98±0.10)×10^<-3>exp(-(10000±300)/(RT))cm^2/sec The present results have been discussed together with the previous results on the diffusivities of chromium, manganese, cobalt, and nickel in molten iron saturated with carbon (Refer to Trans. ISIJ, 11 (1971), p.275). A definite correlation has been found between the diffusivity and the thermodynamic interaction of the diffusing element with the solvent as expressed by the standard free energy of solution of the diffusing element in molten iron saturated with carbon.
社団法人日本鉄鋼協会の論文
1974-09-01