Diffusion of Vanadium, Copper, Silicon, Phosphorus, and Sulfur in Molten Iron Saturated with Carbon
1974 Volume 60 Issue 10 Pages 1533-1541
Details
1974 Volume 60 Issue 10 Pages 1533-1541
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:
DV = (6.45 ± 1.08) × 10−3 exp (− 18700 ± 600 ⁄ RT) cm2/sec
DCu = (41.5 ± 7.5) × 10−3 exp (− 21700 ± 700 ⁄ RT) cm2/sec
DSl = (1.85 ± 0.28) × 10−3 exp (− 13300 ± 500 ⁄ RT) cm2/sec
DP = (7.05 ± 0.95) × 10−3 exp (− 17700 ± 500 ⁄ RT) cm2/sec
DS = (0.98 ± 0.10) × 10−3 exp (− 10000 ± 300 ⁄ RT) cm2/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.
