Effective distribution coefficient of Si in Fe—Si alloys at floating zone melting

Effective distribution coefficients of silicon in Fe—Si alloys with 1.0–12.1 at.% Si in floating zone melting at various solidification rates were determined. The dependence of kef on the solidification rate was compared with the Burton-Prim-Slichter equation. Effective distribution coefficients extrapolated to a zero solidification rate were compared with equilibrium distribution coefficients taken from the equilibrium phase diagram of Fe—Si.