5.4 SOLID-VAPOR EQUILIBRIA (2) S.J.T.U. Phase Transformation and Applications 0 -50.000 Stability range -100,000 Cu20 stable -150,000 -200,000 4Cu+02→2Cu2D -250.000 300.000 Cu stable -350,000 0 200 400 600 800 1000 1200 Temperature (K)- Figure 5.2 AG versus T for the reaction 4Cu +O22Cu,O,showing regions of stability of Cu,O and Cu. SJTU Thermodynamics of Materials Spring2006©X.J.Jin Lecture 9 Chemical equilibrium IlPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2006 © X. J. Jin Lecture 9 Chemical equilibrium II 5.4 SOLID-VAPOR EQUILIBRIA (2) Stability range