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Influence of fabrication and alloying on magnesium alloys
Jakl, Tomáš ; Remešová, Michaela (referee) ; Horynová, Miroslava (advisor)
This bachelor thesis compares mechanical properties of magnesium alloys in dependence on their composition and fabrication. The first part deals with a pure magnesium and its properties. The second part contains information about alloying elements and an overview of the fabrication methods. The third part consists of different magnesium alloys. The thesis contains photographs of microstructures, a review of mechanical properties and their comparison.
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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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Technology of Galvanic Anodization of Non-ferrous Materials and Its Alloys
Remešová, Michaela ; Hadraba,, Hynek (referee) ; Čelko, Ladislav (advisor)
The thesis is focused on the theoretical description of the technology of anodizing of aluminium, magnesium, zinc and their alloys. In this work, methods for formation of oxide layers and the used chemical processes are described in detail. The experimental part of this work deals with formation of oxide layers on aluminium, magnesium and zinc of high purity under different conditions. Oxide layers of different thicknesses were created on all three experimental materials. Aluminium was anodized in a bath of 10% H2SO4, magnesium in the bath of 1 mol/dm3 NaOH, and zinc in the bath of 0.5 mol/dm3 NaOH. Processes were carried out at laboratory temperature. On the aluminium, continuous oxide layer was formed. Furthermore rule "312" was verified, that can indicatively be used for calculating the thickness of the resulting oxide layer on the aluminium. When using lower current of 0.08 and 0.2 A for magnesium anodizing, dark colored layer was created comparing to higher current of 0.5 A. More rough appearance of the oxide layer was produced with increasing voltage. Further, it was observed for magnesium that the resulting layer comprises of two sublayers. For zinc, black colored layer was created when the voltage 20 V and current from 0.4 to 0.5 A were used. In the layer, two sublayers were also observed. For lower voltage and current (0.05 A, 0.17 V), formation of the oxide layer on the zinc does not occur, but the crystallographic etching was observed.
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Research and development of a technology of hard anodization of nonferrous alloys
Remešová, Michaela ; Kudláček,, Jan (referee) ; Vidal, Salvador Pané (referee) ; Kaiser, Jozef (advisor)
Práce je zaměřena na výzkum a vývoj technologie přípravy tvrdých anodických vrstev na třech různých typech neželezných materiálů a to (i) hliníkové slitině (AA1050), (ii) čistém hořčíku (99.9% Mg) a (iii) zinkové slitině (ZnTi2). Vhodnou kombinací anodizačních podmínek (napětí, proudová hustota, teplota a složení elektrolytu atd.) lze vytvářet anodické vrstvy s rozdílnými vlastnostmi. V rámci předložené práce byl prokázán vliv předúpravy a anodizačních podmínek na vzhled, morfologii, tloušťku a tvrdost vytvořených anodických vrstev. Pro zvýšení tribologických vlastností a tvrdosti byly anodické vrstvy přímo dopovány Al2O3 částicemi nebo kombinací Al2O3 a PTFE částic během anodizačního procesu. Teoretická část práce popisuje základní principy anodizace, metody používané v průmyslové praxi a v práci je také popsán technologický proces. Experimentální část je rozdělena na tři základní části. První část se věnuje anodické oxidaci hliníkové slitiny AA1050. Druhá část je zaměřena na anodizaci čistého hořčíku a poslední část je zaměřena na anodizaci zinkové slitiny ZnTi2, která není tak známá jako anodizace hliníku.
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Criminal liability in Czech environmental law
Remešová, Michaela ; Damohorský, Milan (advisor) ; Humlíčková, Petra (referee)
This thesis decribes the current state of criminal liability legislation in Czech environmental law. Relevant parts of the work focus on defining the frame for this topic through its essential terms, they also focus on the role played by sanctions in the area of environmental protection and furthermore they focus on one of their constitutive source, criminal liability of natural and legal persons. Special focus is given to criminal liability of natural persons, particularly on the evolution and description of the current state of legislation, the evaluation and de lege ferenda suggestions included. Lastly the text describes present Swedish criminal liability legislation in the field of the environmental protection and compares it with Czech legislation.
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The most important Toraja rituals and their current form
Budiman, Michaela ; Oberfalzerová, Alena (advisor) ; Dubovská, Zorica (referee) ; Remešová, Blanka Michaela (referee)
The presented doctoral thesis called The Most Important Toraja Rituals and Their Current Form deals with the ethnic group of Toraja, who inhabit the province of Tana Toraja, located in the southern part of the Indonesian island of Sulawesi. The work presents Toraja culture with a focus on two of the most important rituals - funerals and weddings. The goal is to outline the original form of these rituals and to capture the major social and religious changes in Toraja society since the Dutch missionaries first entered the area of present day Tana Toraja at the beginning of the 20th century. The Dutch introduced Christianity to the Toraja people, who until then adhered to their autochthonous religion Aluk Todolo. Almost all of the Toraja people gradually converted to Christianity, though they did not fully leave behind their original customs. In this work, I advert to how much the newly accepted Christianity influenced contemporary Toraja rituals, with an emphasis on the shift in their form and meaning. The work is based mostly on the field research; I implemented the method of concentrated observation. I also conducted and recorded many interviews with local people. After returning from the field, I analysed all of the collected text, voice, and video materials. Based on its analysis and the specialized...
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Woman's and men's roles in the Iban tribe in Kalimantan
Remešová, Blanka Michaela ; Vrhel, František (advisor) ; Pargač, Jan (referee) ; Uherek, Zdeněk (referee)
The doctoral thesis studies woman's and men's roles in the Iban tribe in Kalimantan. As a result of the growing influence of the majority society, these crofters, originally living in the heart of the primeval forest, have undergone many changes in the last 20 years. They have to cope with a different lifestyle and values hectically imposed upon them to a large extent. This process influences the structure of the whole society, and affects also the traditional system of male and female roles. Through deep study and analysis of female and male activities, I have studied penetrability of the assigned roles, which start to appear as impaired or non-functional, and which determine the creation of new structures.
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Research and development of a technology of hard anodization of nonferrous alloys
Remešová, Michaela ; Kudláček,, Jan (referee) ; Vidal, Salvador Pané (referee) ; Kaiser, Jozef (advisor)
Práce je zaměřena na výzkum a vývoj technologie přípravy tvrdých anodických vrstev na třech různých typech neželezných materiálů a to (i) hliníkové slitině (AA1050), (ii) čistém hořčíku (99.9% Mg) a (iii) zinkové slitině (ZnTi2). Vhodnou kombinací anodizačních podmínek (napětí, proudová hustota, teplota a složení elektrolytu atd.) lze vytvářet anodické vrstvy s rozdílnými vlastnostmi. V rámci předložené práce byl prokázán vliv předúpravy a anodizačních podmínek na vzhled, morfologii, tloušťku a tvrdost vytvořených anodických vrstev. Pro zvýšení tribologických vlastností a tvrdosti byly anodické vrstvy přímo dopovány Al2O3 částicemi nebo kombinací Al2O3 a PTFE částic během anodizačního procesu. Teoretická část práce popisuje základní principy anodizace, metody používané v průmyslové praxi a v práci je také popsán technologický proces. Experimentální část je rozdělena na tři základní části. První část se věnuje anodické oxidaci hliníkové slitiny AA1050. Druhá část je zaměřena na anodizaci čistého hořčíku a poslední část je zaměřena na anodizaci zinkové slitiny ZnTi2, která není tak známá jako anodizace hliníku.
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