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Design of special asphalt mixtures SAL for the repair of cement concrete pavements
Kalfeřt, Martin ; Špaček, Petr (referee) ; Varaus, Michal (advisor)
In this thesis layer with increased resistance to crack propagation (SAL) are designed. The theoretical part describes the SAL layer, further the input materials, their production and design of various mixtures. The following is a description of the tests, which include tests of permanent deformation, crack propagation, low-temperature characteristics, test, flexural strength and relaxation. After the test results and conclusion are stated.
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ASI-I modul for lift control boxes
Cseri, Peter ; Fiedler, Petr (referee) ; Štohl, Radek (advisor)
In the first part of my thesis, I was studying materials about AS-Interface network. Then I designed connections between ASI chips and microcontroller that controls the elevator’s control panels. After that I designed all that on double layer board using Eagle layout editor 4.12r2. After that I completed the boards with all electronics circuits and electric components. Then I had to program microcontrollers and microchips for use. These control panels and programs are my final products of this project.
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Electrodes for lithium-ions batteries based on LiCoO2
Nejedlý, Libor ; Čech, Ondřej (referee) ; Sedlaříková, Marie (advisor)
This master´s thesis deals with electrodes for lithium-ions batteries based on LiCoO2. The first part of the project is devoted to the characteristics of Li-ion batteries, electrochemical reactions and characteristics of electrode materials. The next part describes an experiment that deals with the effects of NA doping on performance of layered materials for lithium secondary batteries. The materials were measured by cyclic voltammetry, impedance spectroscopy and galvanostatic cycling.
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Influence of Mn ionts in nickel hydroxide on behavour electrodes
Cirkovský, Jaroslav ; Vrbický, Jiří (referee) ; Sedlaříková, Marie (advisor)
The aim of my diploma thesis was to explore the influence of manganese ions put into nickel nitrate structure. The attention was focused mainly on the stabilization of nickel nitrate a modification, which could not change into b modification. The theoretical part of my thesis focused on applied materials, kinds of acumulators, basic parameters of acumulators and the description of chosen methods of measurement employed. It contained the electrodeposition, the impedance spectroscopy and the cyclic voltammetry. The task of the experimental part was to measure the effect of manganese ions put into potassium hydroxide structure. Proportions of Ni (nickel nitrate) : Mn (manganese nitrate) 10:0, 7:3, 5:5, 6:1 and 6:4 were blended for the measurement. By means of the electrodeposition, there was a thin layer of nickel hydroxide with an admixture of manganese ions from nickel nitrate and manganese nitrate dilution put on the nickel plate. After the spread of the thin layer on the nickel plate, the measurement by the method of cyclic voltammetry followed. The next task consisted in trying to add KOH (potassium hydroxide) anionic and cationic surfactant into the dilution.
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Surface treatments in light industry
Dokoupilová, Dita ; Vyplašil, Evžen (referee) ; Kubíček, Jaroslav (advisor)
The bachelor thesis, written in the subjekt B2341 within the bachelor study, deals with analysis of application of powder plastics. The powder coating is a plastic layer technology used on metal materials. The main aim is a corrosion protection. The thesis contains an analysis of particual surface pre-treatments methods suitable for powder coating, the description of several color systems, the chemical analysis of the powder colours being used today and the typical opportunities of use. This thesis includes also the description of the setting process and several types of baking ovens.
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The research on electrochemical and material characteristics new developed layered electrode materials for lithium-ion batteries
Kratochvíl, Miroslav ; Jirák, Tibor (referee) ; Sedlaříková, Marie (advisor)
The diploma thesis deals with electrode materials for lithium-ions accumulators, concretely layered materials prepared via new methods. The main objective of this work is dealing with new procedures prepare electrodes of newly developed layered electrode materials and subsequently their measure. Another challenge was a theoretical analysis of newly developed layered electrode materials for positive and negative electrodes and their preparation of new procedures. In this work the detailed procedures for the preparation of individual electrodes, electrolytes and other issues associated with these preparations. There were describing batteries of general, primary and secondary lithium cells, fuel cells, Lithium-ion batteries, layered materials forming the electrodes and of course the history these cells. Practical work is focused on separate measurements layered electrode materials prepared by new processes and assessment of results for individual layered materials. In the practical part has been made that the newly prepared layered electrode materials offer higher capacity and voltage.
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L.E.T. optomechanika Praha, spol. s.r.o. – testing of thin layers formed by vapor deposition and sputtering
Řeháková, Martina
Were tested by thin layer formed by deposition and sputtering, which are used for optical components power lasers, according to customer requirements.: based material. float glass, borosilicate glass, etc.; broadband anti-reflection coating, dual-layer, single; reflective layer Al, Al + SiO2 + MgF2;layers of Cr, Cr2O3, Au or other variants as required
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Anodizing of Aluminium and Its Alloys
Remešová, Michaela ; Julišová, Martina (referee) ; Čelko, Ladislav (advisor)
This thesis focuses on the hard anodic oxidation of aluminum and its alloys. As an experimental materials were used various aluminum materials, produced by cold forming and casting. The work contains information about chemical composition of the base materials, photographs of their microstructure, the results of surface roughness before and after anodic oxidation, photo anodized layer, measurements hardness oxide layers. For study were used methods light microscopy, scanning electron microscopy, surface profilometry and microhardness measurements.
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Posouzení dřevěných podlahovin vhodných pro podlahové vytápění
Peřina, Jakub
The main objective of this thesis is to assess the suitability of multilayer wood flooring especially in terms of dimensional stability, which is the most important feature when combining flooring with underfloor heating. Part of the work is to describe the problems of floor heating from the perspective of the past and present point of view, mention types of flooring, including designs and flooring installations. The second part of the work is about issue of step layer suitable for underfloor heating, with a broader focus on wood materials, particularly engineered wood flooring. Work also includes measured values and processed to assess two three-layer flooring of different material composition. In conclusion of this work is indicated an assessment of available laminated wood flooring, which were examined in our test and also draft of new design flooring made of wood, which would improve the thermal effects of underfloor heating.
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Příprava a charakterizace tenkých vrstev oxidů zirkonu a titanu
Krejčíková, Simona ; Matějová, Lenka ; Matěj, Z. ; Jirkovský, Jaromír ; Šolcová, Olga
Titania and zirconia belong to nanoporous materials with huge application potential in photocatalysis, dye-sensitized photoelectrochemical cells, electrochromic devices, sensors and other applications, especially in the form of nanolayers. Differences in surface morfology, texture and crystallinity influence their catalytic impact. Therefore special attention is focused on the detailed textural and structural characterizations of thin titania-zirconia nanolayers prepared by sol-gel templated route.
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