IIT BHU Varanasi Syllabus
Ceramic Properties of Ceramic Materials
Properties of Ceramic Materials
Thermal Properties: Heat capacity, Thermal Expansion, Thermal Conductivity: Thermal shock resistance,
Radiative heat transfer. Mechanical Properties: Elastic, Plastic, anelastic and viscoelastic behaviour. Griffith- Orwan criteria for brittle
fracture. Statistical treatment of failure of ceramic materials, Strengthening of ceramics, hardness, abrasion
tribology. Electrical behaviour: Electronic and ionic conduction in ceramics. Band structure of ceramic materials. Broad band
and narrow band semiconductors. Hopping conduction. Non-stoichiometric and valency controlled semi conduction,
metallic conduction. Nernst Einstein equation for diffusion and conductivity in ionic solids. Effect of temperature,
pressure and impurities. Super Conductivity: BCS theory, High Tcsuperconductors, collosol and giant magneto resistance.
Dielectric behaviour: Claussius-Mosotti equation, behaviour of dielectrics in DC and AC electric fields. Linear and
non-linear dielectrics, Ferroelectricity, dielectric behaviour of polycrystalline and polyphase ceramics.
Magnetics Ceramics: Exchange and super exchange interactions, crystal field splitting. Spin-order, Spinel, garnet
and hexagonal ferrites. Effect of microstructure and composition on the magnetic behaviour.
Optical Properties: Reflection, transmission, absorption and scattering of radiation. Coloration, luminescence,
fluorescence and phosphorescence, laser and maser.