First law of thermodynamics, second law of thermodynamics, some relations between thermodynamics quantities, thermodynamics of phase transformation and chemical reactions. Partial molar and excess quantities. Thermodynamic properties of alloy system - equilibrium between phases of variable composition. Free energy of binary system. Thermodynamics of surfaces and interfaces. Classification of defects in the crystal, defects in the metals, defects in elemental semiconductors, defects in nearly stoichiometric compound, defects in non - stoichiometric compound.