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Titanium, Alloys and Intermetallics for Biological and Industrial Applications
Vespalec, Vítězslav ; Jech, David (referee) ; Čelko, Ladislav (advisor)
The creation of this Bachelor´s thesis was performed as a search retrieval, which includes basic information about titanium and its alloys. In the first chapter is stated history of titanium manufacturing. Following chapter include the most important property of pure titanium, such as alotropic modifications of the crystal grid, chemical, physical and technological characteristics, there is also space, that is assigned for using contemporary division of titanium alloys, detrimental effect of impurity, shape memory effect and intermetallics instance. Third part concern about selected application in industry. The conclusion pursue about biocompatibility factor and possibility use titanium and its alloys in implantology and dental applications.
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Analysis of material to be machined influence on the wear and tool durability
Tolkner, Josef ; Novák, Zdeněk (referee) ; Bumbálek, Bohumil (advisor)
Machining technology is a multi disciplinary field, and together with the economy are playing always more important role in the success of the enterprise market products and services. Recent studies show that it requires very close link between technology, management and information technology such as the integration process and production planning, simulation of manufacturing systems, production flexibility, virtual machines, control algorithms, etc. The key changes are based on the requirements for miniaturization of products, higher production accuracy, closer tolerances, better surface quality, part of weight reduction, reduction of lot size and reducing production costs. The report is focused on machining titanium alloys. In the theoretical part are presented the properties and the distribution of titanium alloys. In the practical part is then carried out an experiment aimed to influence the composition of workpiece material on tool wear. Experiment results and recommendations are listed at the end of this report.
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Machining of titanium alloys
Horáček, David ; Mouralová, Kateřina (referee) ; Píška, Miroslav (advisor)
This thesis is focused on titanium and its alloys, in terms of properties and uses. The problems of machinability, cutting tools, quality of machined surfaces and machining method are discussed. Threads in titanium alloys Ti-6AI-4V were cut in the practical part. The intention was to compare torque moments and surface quality of threads by using two cutting oils.
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Optimization of biocompatible Ti/hydroxyapatite-based composite blends fabrication
Slovák, Tomáš ; Matějková, Michaela (referee) ; Čížek, Jan (advisor)
The bachelor's thesis deals with optimalization of biocompatible composite mixtures based on titanium and hydroxyapatite. The theoretical part is focused on biomaterials, specifying Ti and HA in more detail. The following section pertains to the principle of mechanical alloying. Preparation of the biocompatible composite mixtures by mechanical alloying and their following analyses are described in the experimental part. Results obtained in the experimental part are summarized in the discussion.
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Machining of titanium alloys
Müller, Peter ; Sliwková, Petra (referee) ; Píška, Miroslav (advisor)
The bachelor thesis specifies the most important properties and production processes of titanium, categorizes titanium alloys and their properties. In the experimental part, titanium alloy Ti-6Al-4V blank was machined and cutting forces were measured, depending on selected feeds per revolution. Subsequently specific cutting force was calculated and compared with values given by the tool manufacturers.
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Oxidation behavior adjustment for TiAl intermetallics by Al-Y multilayers
Handrk, Jiří ; Tkachenko, Serhii (referee) ; Jan, Vít (advisor)
Mechanické vlasnosti intermetalika na bázi titan hliník Ti-46Al-7Nb-0.7Cr-0.1Si-0.2Ni jsou konstatní do teploty 700 °C. Nad touto teplotou slitina oxiduje. Cílem této práce bylo zlepšit oxidační vlastnosti pomocí kovové multivrstvy na bázi yttrium hlinik. Pro depozici vrstev byla použita metoda PVD. Na vzorky byly naneseny vrstvy čistého ytria nebo kombinace yttrium, hliník. Vzorky byly následně žíhány v inertní atmosféře na 700°C a 900°C nebo nebyly. Kvalita nanesených vrstev byla zkoumána pomocí scratch testu a EDS analýzi. Dále byly vzorky izotermicky oxidovány na 900°C po dobu 100 hodin. Na vzorcích byly po oxidaci prováděny měření pevnosti v tříbodovém obybu a měření hmotnosti. Chemické složení oxidické vrstvy bylo vyhodnoceno pomocí EDS. Žádná z vrstev s nebo bez žíhání neprokázaly zlepšení oxidických vlastností. Vyšší teplota žíhání prokýzala zlepšení mechanických vlastnotí vrstvy, ale zhoršení materiálu.
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Titanium and its alloys in aviation
Černota, Jan ; Adam, Ondřej (referee) ; Němec, Karel (advisor)
This bachelor thesis deals with the issue of the use of titanium and its alloys in aviation. First, it deals with titanium as a light metal, its history, occurrence, use, manufacture, and properties. Then about its alloys, their division, and the characteristics of individual alloys, considering their utility for aerospace applications. The main part deals with the use of titanium and its alloys in the aerospace industry, where the performance requirements of materials used in aviation are summarised, how titanium meets these properties and for which components titanium is most often used. The thesis also predicts the development of the use of these materials in the aerospace industry.
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Micro and nanocomposites in the microstructure of metallic materials
Olivo, Tomas ; Adam, Ondřej (referee) ; Jan, Vít (advisor)
This bachelor thesis focuses on the field of metal matrix nanocomposites. Firstly, the research covers the general mechanical characteristics of materials utilized in nanocomposites. Subsequently, the research defines the mentioned matrix and its different types, that are regularly applied during the production of nanocomposites. Secondly, the research analyses the types of reinforcing (strengthening) components and their use in matrix advancement. This will further lead to introducing the individual mechanisms that reinforce nanocomposites. Thirdly, this research describes the methods employed in the production of nanocomposites – both continuously or discontinuously reinforced. Moreover, the focus shifts to the individual types of materials that satisfy the required characteristics of composites. This outlines the specific types of composites created by the reactions within the materials. Finally, the research summarises the benefits of using nanocomposites.
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Biocompatible metallic materials
Mišáková, Liliana ; Věchet, Stanislav (referee) ; Němec, Karel (advisor)
This bachelor´s thesis, which was processed in the form of literary research, deals with the issue of biocompatible metallic materials. The aim of this work is to provide an overview of the materials used in general medicine and dentistry and to present the latest knowledge of their development. The first part is devoted to the characterization of biomaterials and their division. In the next section, metals and their alloys are listed together with their desired properties and typical applications. The following section focuses on the method of surface treatment of titanium, which enables it to achieve better bioactivity. The final part of this thesis offers the latest findings on the properties and the way of using low-melting-point alloys.
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