The diffusion coefficients were determined as a function of temperature and alloy content, and the results were used to investigate H and N transfer in slightly stirred melts of pure Fe, or its alloys with Cr, Mn, Ni or Si. The diffusivity of H in pure liquid Fe at 1600C was equal to 1.05 x 10-3cm2/s. The diffusivity at 1600C decreased with increasing content of Cr, Mn or Ni. In Fe-Si, it increased with increasing alloy content. Therefore, an increase in H solubility corresponded to a decrease in the diffusivity, and  vice versa. The change in diffusivity at 1600C, due to alloying additions, increased in the order: Ni, Cr, Si, Mn. The activation energies also increased, with increasing alloy content, in Fe-Cr, Fe-Ni and Fe-Si. In the case of Fe-Mn, the diffusion parameters decreased in value with increasing Mn content. The effect of alloying additions upon the diffusion parameters increased in the order: Cr, Ni, Si, (Mn); with Cr and Ni having similar effects. The so-called compensation effect was observed in all of the systems.

H.Beater, K.W.Lange: Archiv für Eisenhüttenwesen, 1977, 48[9], 487-93