kinetics of crystalisation

• Gibbs free energy


  Determines spontaneity of reactions in closed systems (no transfer of mass)
• Gibbs free energy conditions

  • ΔG = 0 (equilibrium)
  • ΔG > 0 (spontaneous in the opposite direction)
  • ΔG < 0 (proceed spontaneously)
• Gibbs free energy


  • It is affected by the particle's surface (positive) and internal (negative) energies
• Effect of Temperature


  1. T_m = equilibrium solidification temperature

  2. H_f = latent heat of fusion
• Heterogenous Nucleation


  1. Ɣ_SL = solid-liquid

  2. Ɣ_SI = solid surface

  3. Ɣ_IL = liquid surface