After studying this module, the user should be able to:

• Define the partition coefficient.
• Derive the equation for steady state partitioning of solute at an advancing planar front.
• Calculate segregation profiles after solidification with uniform liquid concentration.
• Explain how diffusion in the solid affects segregation profiles and leads to limiting cases of lever rule and Sheil equation.
• Predict the segregation profile after a single zone melting pass and understand how this will change after multiple passes.