Phase diagram (Britannica)1 S.J.T.U. Phase Transformation and Applications Page 16/45 graph showing the limiting conditions for solid, liquid,and gaseous phases of a single substance or of a mixture of substances while undergoing changes in pressure and temperature or in some other combination of variables,such as solubility and temperature. SJTU Thermodynamics of Materials Spring2010©X.J.Jin Lecture 13 Phase RulePhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2010 © X. J. Jin Lecture 13 Phase Rule Page 16/45 Phase diagram (Britannica) 1 graph showing the limiting conditions for solid, liquid, and gaseous phases of a single substance or of a mixture of substances while undergoing changes in pressure and temperature or in some other combination of variables, such as solubility and temperature