ENGINEERING
MATERIALS FOR ELECTRICAL ENGINEERS ENGINEERING
MATERIALS FOR ELECTRICAL ENGINEERS
(INGE 3045)
OUTCOMES
After the completion of the course the students should be able to:
• characterize structure-property-performance relationship
• distinguish the structure of different types of materials
• •describe the mechanical and the electrical properties of materials
• describe the magnetic and optical behavior of metals, ceramics and polymers
• select materials for various engineering applications such as conductors, semiconductors, insulators, magnetic and electro-optics.
• describe the mechanical properties of metals, ceramics, polymers and composite materials.
Metals - Definition, history and examples. Ceramics- Definition, history and examples. Plastics - Definition, history and examples. Electronic Materials - Definition, history and examples. Composites - Definition, history and examples. Concrete.
Atomic Structure. Electronic Structure. Electronegativity. Periodic Table. Atomic size. Ionic Size. Ionic Bond - Properties. Covalent Bond - Properties. Polar Covalent. Carbon Hybridization. Metallic Bond - Properties. Secondary Bonding. Mixed Bonds.
Crystal Structure. Lattice. Unit Cell. Crystal Systems. Bravais Lattices. Cubic Cells. Coordination Number. Atomic Packing Factor. Hexagonal Close Packed Cells. Atomic Position in Cubic Cells. Directions. Miller Indices. Planes. Packing of Atoms. Density. Polymorphism - Allotropy. X-Ray Diffraction. Imperfections in Crystals. Grain Structure. Microstructure.
Defects in Solids. Vacancies. Solid Solution - substitutional - Interstitial. Interstitial Sites. Dislocations. Interfacial Defects. Grain size. Diffusion. Steady State Diffusion. Diffusivity. Non-Steady State Diffusion. Industrial Applications - Doping - Carburization.
Ohm's Law and Electrical conductivity. Electronic and Ionic Conduction. Band Structure of Solids. Conduction in Terms of Band and Atomic Bonding Models. Conductivity of Metals and Alloys. Superconductivity. Conductivity of Other Materials. Insulators and Dielectric Properties. Polarization in Dielectrics. Dielectric Strength. Electrostriction, Piezoelectricity and Ferroelectricity.
Intrinsic and Extrinsic Semiconductors. Temperature Dependence of Carrier Concentration. Factors that Affect Carrier Mobility. Semiconductors Devices. p-n Rectifying Junction. Transistors - junction - MOSFET. Manufacture and Fabrication of Semiconductor devices.
Classification. Magnetic Dipoles and Magnetic Moment. Magnetization, Permeability and Magnetic Field. Diamagnetism and Paramagnetism. Ferromagnetism. Antiferromagnetism and Ferrimagnetism. Influence of Temperature on Magnetic Behavior. Domain Structure and Hysteresis Loop. Curie Temperature. Soft Magnetic Materials. Hard Magnetic Materials. High Energy Hard Magnetic Materials. Magnetic Storage. Metallic and Ceramic Magnetic Materials.
Photonic or Optical Materials. Electromagnetic Spectrum. Atomic and Electronic Interactions. Optical Properties of Metals. Optical Properties of Nonmetals. Refraction. Reflection. Absorption. Transmission. Color. Opacity and Translucency in Insulators. Luminescence. Photoconductivity. Lasers. Optical Fibers.
Mechanical Properties. Types. Basic Definitions. Tensile Testing. Engineering Stress and Strain. True Stress and Strain. Strain Hardening Parameter. Instability on Tension. Fracture Behavior - Ductile and Brittle. Stress-Strain Behavior of Ceramics. Torsion Test. Impact Test. Ductile-Brittle Transition Temperature. Hardness. Hardness Types. Correlation between hardness and tensile strength. Fatigue Test. Creep Test.
The quizzes in this course will be given through WebCT.
Assessment, grades and tentative dates
Homework, attendance and exams