First order transitions:variation of equilibrium S.J.T.U. pressure with temperature (4) Phase Transformation and Applications △SdTe9=△Vdp9 △G=AH-Te9△S=0 AS-AH Hd-AV dp" △H Clapeyron equation Teg△V SJTU Thermodynamics of Materials Spring20o7©X.J.Jin Lecture 7 equilibrium IPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2007 © X. J. Jin Lecture 7 equilibrium I First order transitions: variation of equilibrium pressure with temperature (4) eq eq Δ=Δ dpVdTS STHG =Δ−Δ=Δ 0 eq eq T H S Δ =Δ eq eq eq dpV T ΔH dT Δ= VT H dT dp eq eq eq Δ Δ = Clapeyron equation