Abstract:Miscibility gaps appear in many alloy systems and, consequently, spinodals and critical points. Three methods are presented for determining a critical point in a multicomponent system. The first method is Gibbs thermodynamic conditions for spinodal and critical point. The spinodal is where the determinant of Gibbs energy Hessian equals zero. The critical point is on the spinodal and where the determinant of another matrix, the Gibbs energy Hessian with any one row replaced by the gradient of the determinant of… Show more
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