Question: A phase nucleates from plase a on a flat impurity surface. The interfacial energy Fat is isotropic and has a value 300 m//m The volume

A phase nucleates from plase a on a flat impurity surface. The interfacial energy Fat is isotropic and has a value 300 m//m The volume free energy change associated with the transformation is -5 x 10//m If the ratio of the critical free energy of nucleation on the impurity surface to that for homogeneous nucleation is 5/32, calculate critical free energy for the heterogeneous nucleation

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