COURSE OBJECTIVE:
Synthesis of basic knowledge about technically important glasses and ceramics. Knowledge of the relationship of process parameters with the structure and properties of glass and ceramics as a basic prerequisite in understanding the behavior of materials in the application and design of its properties.
COURSE PROGRAM:
Week 1:
Historical development of ceramics / glass. Basic similarities / differences between glass and ceramics. Division of ceramics / glass and their application. The role of ceramicists / glaziers in the production and design of microstructure and properties.
Week 2:
Microstructure of ceramic material (structural elements). Phase diagrams (thermodynamics / kinetics) are important for ceramics. Process steps in ceramic production. Raw materials (natural / synthetic) for the preparation of ceramic mass. Synthesis, finishing and characterization of ceramic powders.
Week 3:
Oxides (Al2O3, ZrO2, 3Al2O3-2SiO2). Carbides (SiC, B4C, TiC). Nitrides (Si3N4, AlN, BN, TiN). Boridi. Silicides. Methods of shaping ceramic mass. Pressing (uniaxial, isostatic, hot-isostatic). Molding. Preparation and characterization of ceramic casting masses. Other shaping procedures.
Week 4:
Heat treatment process. Boundary surface and sintering. Thickeners. Grain growth mechanisms. Sintering mechanisms. Viscous flow mechanism. Sintering in the presence of a liquid phase (wet). Sintering without the presence of a liquid phase (dry). Sintering problems.
Week 5:
Thermomechanical properties of ceramics. Thermal expansion coefficient. Thermal conductivity. Compressive and flexural strength. Fracture toughness (KIC). Creep resistance.
Week 6:
Chemical processes for the preparation of ceramics. Hydrothermal synthesis. Sol-gel procedure.
Alkoxides. Steam phase reaction synthesis. Polymer pyrolysis.
Week 7: 1st control test
Week 8:
General knowledge about the process of melting and crystallization. Fundamental differences in the behavior of glass and crystal bodies. Fixed points of glass solidification of melt. Development of classical theories on the structure of glass (according to Tammann, according to Goldschmidt, according to Lebedev). Network theory according to Zachariasen and Warren.
Week 9:
Structure and properties of clear glasses. Alkali-silicate, that is, alkaline earth-silicate glass. Borate and borosilicate glasses. Glass with a high lead content. Phosphate glasses. Tellurite glass. Germanate glass.
Week 10:
Structure and properties of colored glass. General considerations on the absorption or light transmission of glass. Ion stained glass. Glass with subsequently developed color. Colloidal stained glass (ruby). Glass that absorbs / transmits IR rays. Turbid glass.
Week 11:
Crystallization of glass. Germ formation and crystal growth theory. Occurrences of separation into microphases in glasses. Crystallization as a glass defect. Directed crystallization. Glass-ceramics / types.
Week 12:
On the mechanical strength of glass. Effective strength theoretical and practical explanation. Defects on the glass surface. Griffith pockets. Refractive index, dispersion and Abbe number. Voltages. Surface tension. Thermal expansion. Thermal and electrical conductivity. Viscosity. Chemical resistance of glass.
Week 13 and 14:.
Glass production. Raw materials for glass production. Preparation of mixtures (calculation). Glass melting (melting aggregates, energy sources). Glass shaping. Production of hollow, cast, pressed, flat glass and glass tubes. Production of optical glass. Production of foam glass. Post-processing of glass. Grinding and polishing glass. Production of safety glass.
Week 15: 2nd knowledge test (2nd colloquium)
Laboratory exercises:
1. Calculation and preparation of ceramic mass for casting.
2. Determination of rheological characteristics of the prepared mass and casting of ceramic product in gypsum mold.
3. Determination of drying curve, drying and baking of raw material.
4. Determination of apparent density and porosity of raw material and sintered ceramic body (Hg-porosimeter).
5. Calculation and preparation of raw material mixture for melting glass. Melting glass in a laboratory furnace.
6. Visit to the packaging / crystal glass factory.
DEVELOPMENT OF GENERAL AND SPECIFIC COMPETENCIES OF STUDENTS:
Understanding of modern theories and technological processes related to the science and engineering of ceramic materials and glass. Conducting an experiment of preparing a ceramic product and getting acquainted with the real technological process of production of packaging / crystal glass ..
STUDENTS 'TEACHING OBLIGATIONS AND THEIR PERFORMANCE:
Attending lectures and laboratory exercises.
CONDITIONS FOR OBTAINING A SIGNATURE:
Neat attendance at lectures and completed and colloquial laboratory exercises.
TEACHING METHODS:
Lectures and laboratory exercises
METHOD OF EXAMINATION OF KNOWLEDGE AND EXAMINATION:
2 tests (min. 50% of points on each colloquium brings exemption from the oral exam)
written and oral exam
i) COURSE LEARNING OUTCOMES:
1. To connect modern theories and technological processes related to the science and engineering of ceramic materials and glass.
2. Connect the relationship between process parameters and the structure and properties of glass and ceramics
3. Plan and conduct laboratory experiments
4. Argue the results of the experiment
5. Prepare laboratory reports
j) LEARNING OUTCOMES AT PROGRAM LEVEL:
1. connect the basic elements of material chemistry and engineering: structure, properties, production and use of materials
2. apply scientific methods in solving problems in the field of chemistry and materials engineering
3. to connect the results obtained by various methods with literary knowledge in order to interpret them as completely as possible
4. independently organize your time and work plan
5. plan complex experiments using laboratory equipment and devices
6. develop production processes and materials' quality assessment
7. discuss about research results to non-experts, different field experts and international partners
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.M. W. Barsoum, Fundamentals of Ceramics, IOP Publishing Ltd. 2003
D. Segal; Chemical Synthesis of Advanced Ceramic Materials, Cambridge University Press, Cambridge, 1989.
H. Salmang, H. Scholze, Keramik Teil 1 und 2, Springer Verlag, Berlin 1982.
W. Vogel, Kemija stakla, SKTH/Kemija u industriji, Zagreb 1985.
A. G. King, Ceramic Technology and Processing, William Andrew Publishing Inc. 2002.,
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