637-0079/05 – Electrotechnical Materials (ETM)
| Gurantor department | Department of Non-ferrous Metals, Refining and Recycling | Credits | 4 |
| Subject guarantor | prof. Ing. Jaromír Drápala, CSc. | Subject version guarantor | prof. Ing. Jaromír Drápala, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2005/2006 | Year of cancellation | |
| Intended for the faculties | FEI | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Student will be able to:
- classify basic groups of the current and advanced materials for applications in electric engineering, micro-electronics and opto-electronics
- apply basic theoretical knowledge on influence of composition and internal structure of material on physical, mechanical, electrical, magnetic and optical properties
- define requirements for individual groups of materials, technology for preparation and further processing, realisation of electronic elements
Teaching methods
Lectures
Individual consultations
Tutorials
Project work
Summary
The aim of teaching of the subject is to provide students with basic information about current and prospective materials, which are used in various fields of electrical engineering and micro-electronics. Individual categories of materials for applications in electrical engineering are the following ones: conductive materials (conductors, super-conductors, materials for contacts, thermo-electric conversion, resistance materials, solders), dielectrics, ferro-electric materials and insulating materials, magnetic materials (soft, hard, special - based on alloys of rare-earth metals and oxides) semiconductors for micro- and opto-electronics, solar cells, metallic glasses, liquid crystals, nano-materials.
Compulsory literature:
BOUDA, V., HAMPL, J., LIPTÁK, J. Materials for Electronics. Textbook of ČVUT Praha, 2000, 208 p.
HARPER, CH.A. Electronic Materials and Processes Handbook. McGraw-Hill, 2004.
WHITAKER, J.C. Microelectronics. Second Edition. CRC Press, 2006.
KŘÍŽ, M., KULA, V. Introduction to Electrical Engineering. Praha: ČVUT. 2000
HAMPL, L. LIPTÁK, J. Materials for Electrotechnics. Praha: ČVUT. 2006
Recommended literature:
Way of continuous check of knowledge in the course of semester
One check test over the semester.
E-learning
DRÁPALA, J., KURSA, M. Elektrotechnické materiály. E-learning na, 2012, 439 s. http://www.person.vsb.cz/archivcd/FMMI/ETMAT/index.htm
Other requirements
Elaboration of seminary project on the selected topic.
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
1. Electron theory of the metallic state. Cohesion forces of solid matters; types of elementary bonding and their influence on properties of materials. Classification of solid matters according to chemical bonds. Cohesive energy of the metal, band theory, standard metals and transition metals.
2. Crystalline materials (polymorphism), standard type of crystal lattices, plains and directions, reciprocal lattice. Brillouin zone, conductors, insulators, semiconductors. Specific heat.
3. Crystal structure defaults: vacancies, dislocations, stacking faults, grain boundaries in crystals. Single crystals, polycristalline and amorphous metals. Solid solution, intermetallic phases. Linear expansion and volume changes during phase transformation in solid state.
4. Conducting materials. Physical principles of the electrical conductivity of metals, basic characteristic of conductors, superconductivity. Metallic conductive materials (Cu, Al, W, Mo, …) and their alloys, carbon materials.
5. Special conducting materials. Contact materials, resistance materials, thermocouples, bimetals, solders, metals and alloys for safety-fuse, shape memory materials. Superconducting materials.
6. Physical properties and main kinds of semiconductor materials. Semiconductor materials: elementary and compounds. Basic demands on preparation of pure materials.
7. Refining and structure improving methods, zone refining, directional crystallization, distillation. Methods of crystal growing, Czochralski method. Types of semiconductors (AIIIBV, AIIBVI). Technology of thin layers deposition (epitaxy) and junction (diffusion).
8. Magnetic materials. Basic relations, notions, fundamentals of the ferromagnetism, characteristics of magnetic materials. Standard types of magnetic materials.
9. Soft magnetic material (Fe-Si, Fe-Ni), metallic glasses. Hard magnetic material. Ferrites. Structure, classification, processing technologies, characteristics and application domains.
10. Dielectrics and insulators, characteristics and structure insulators, polarization and permittivity of dielectrics, electrical conductivity of insulators.
11. Specific dielectric strength of solid state insulators, breakdown and basic breakdown types, properties of insulators.
12. Overview of electro-insulating materials. Gaseous, liquid and solid state insulators, inorganic insulating material.
13. Construction materials, basic classification: steel, cast iron, non-ferrous metals and alloys, composites, ceramics.
14. Properties of construction materials and methods of mechanical testing: tensile test, compression test, notched test, fracture toughness, fatigue and creep.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction