UNIVERSITY OF MADRAS
B.Sc. DEGREE COURSE IN Physics
SEMESTER SYSTEM WITH CREDITS
(Effective from the Academic Year 2003-2004)

SYLLABUS

Semester V - Application Oriented Subject - Material Science

Duration of Examination: 3 hrs
Maximum Marks: 100
Credits: 4

Unit I

Material Science:

Classification of materials - Engineering requirements of materials - Material structure - Types of Bonds and their energies - Bond formation mechanism - Ionic bond - covalent bond examples ceramics - thermal and electrical properties - uses. Metallic bond - comparison of bonds [Dispersion bonds, Dipole bonds and Hydrogen bonds]. Crystal Imperfections - Types of imperfections - Thermal vibrations - point, line and surface imperfections - Frank - Read source.

Unit II

Phase Diagrams

Basic terms - solid solutions - Hume - Rothery's rules - Intermediate phase - phase diagrams - Gibb's Phase rules - Time - Temperature cooling curves - construction of phase diagrams - the Lever rule - eutectic systems - eutecoid systems - peritectic and peritectoid systems Ternary equilibrium diagram.

Unit III

Phase Transformation:

Rate of transformation - Nucleation [Homogeneous, Heterogenous] - Nucleation and growth - Applications of Phase transformations - Micro constituent of iron - carbon system - The allotropy of iron- Iron - Carbon equilibrium diagram - formation of Austenite - TTT Diagram - transformation Austenite upon continuous cooling.

Unit IV

Electron theory of metals:

Fundamental theories of electrons [Drude and Lorentz theory and Sommerfield free electron theory] - Electron energies in a metal - zone theory of solids - energy gaps - Density of states - zones in conductors, insulators and semi conductors - Factors affecting electrical resistance of materials.

Unit V

Electrical and magnetic properties of materials:

Resistivity - Conductivity - Semi conductors - classification of semi-conductors on the basis of Fermi energy and Fermi level - Insulators - Dielectrics - Ferro electricity - Electro striction - Piezoelectricity - uses of dielectrics - Capacitors Dielectric strength - Magnetic properties of classification - magneto striction - Magnetic Domain - Soft and Hard magnetic materials.

Books for Reference:

1. Materials Science and processes in SI units by SK Hajra Choudhury, Indian Book distributing company

2. Materials Science by G.K. Narula; K.S. Narula; V.K. Gupta, Tata McGraw-Hill

3. Material Science by R.B. Gupta for AMIE Satya Prakashan New Delhi