Open Access Conference Proceedings

Abstract: The purpose of protective coatings is not only to provide the protected material a new, attractive design, but also new properties, longer durability, corrosion resistance, resistance to specific environments etc. These advantages of protective coatings are used in various branches of engineering, for various corrosivity of the environments, for different types of substrates, etc. [..] Read more

Abstract: Research were focused to different zinc coatings quality put on iron alloys (cast iron, steel). In the paper the galvanic, hot-dip and lamellar zinc coatings were compared. [..] Read more

Abstract: In industrial practice on various production stages of the fittings for overhead power line, there are many factors that cause the zinc coating thickness diversification, that in the next step determine its corrosion resistance. This effect is observed especially in the thermal cutting process. [..] Read more

Abstract: The study presents the results of the corrosion resistance and bacteriological research of DC01 steel protected by ZrN, DLC COMP a-C:H and MULTICOMP TiN/TiAlN coatings applied by PVD method (Physical Vapour Deposition). The experiment was divided into two stages. [..] Read more

Abstract: In surface treatment are often used coatings based on Ni. Their properties include significant corrosion resistance, hardness and abrasion resisant. [..] Read more

Abstract: Corrosion failure of metallic electroplated coatings on various products were analysed and the dominant corrosion stimulators were identified. The thickness and porosity of coatings are very important for their corrosion resistance. [..] Read more

Abstract: Laser surface texturing (LST) is an emerging effective method for forming surfaces with specific parameters: optical, electrical, tribological, hydrophobic or hydrophilic and so on. The LST is laser parameters and overlap sensitive process. [..] Read more

Abstract: Water-based coating systems are becoming more popular with consumers due to their simple application and a wide range of colours. The coating systems, in addition to the requirement of nice finishes, are supposed to provide the sufficient protection of background material from corrosion. [..] Read more

Abstract: Recently, research-development studies conducted for the production of organic brake pads because of the usage of asbestos in brake pads have negative effects on human health and the environment. This study aims to develop to non-asbestos high performance brake pads. [..] Read more

Abstract: Viscoplasticity and crystal plasticity have been used to model cyclic deformation of nickel-based superalloys at elevated temperature. Model parameters were determined from strain-controlled cyclic test data, with consideration of strain rate effects. [..] Read more

Abstract: The aim of the work was to determine the microstructure effect on the tribological properties of the Monel K-500 alloy. The supersaturation temperature of 1150 °C was selected in such a way so that it would exceed the solution temperature of the carbides present in the Monel K-500 alloy by less than 10 °C. For the annealing temperature assumed in this way, the annealing time was assumed to be 1 h, 2 h and 4 h. [..] Read more

Abstract: Exova Plzeň tests the load control fatigue test according to the required specifications due to the quality control on rolled aluminum sheets and plates.Although the machining process is described in specifications in a very detail way, the first test results were approximately 10 % lower than expected. Some round robin test results met the requirements while some others did not. [..] Read more

Abstract: In the work the results of the structural perfection of the cellular and dendrite single crystals with the diameter 24 mm of the Ticonal 9 alloy: 35 % Co – 14.5 % Ni – 7 % Al – 4 % Cu – 5 % Ti – Fe the rest (in wt.%) at the growing rates (R) from 0.1 to 9 mm/min with the constant temperature gradient 10 – 12 K/mm are presented. The block size decrease from 2.3 mm at R = 0.1 mm/min to 1 mm at R = 9 mm/min at the simultaneous disalignment increase from 1.8° to 7.8° accordingly was revealed. [..] Read more

Abstract: The microstructure and mechanical properties of powder metallurgical Al7075 alloy modified by the addition of 1 wt. % Zr were studied. [..] Read more

Abstract: In this work, a Zn-1.6Mg alloy was studied. The alloy composition was chosen according to the results of our previous work, which was focused on the research of biodegradable materials. [..] Read more

Abstract: In this year at our workplace (the Department of Engineering Technology - Technical University of Liberec) we were engaged in metallurgical research on copper and its alloys, especially crystallization. This research was never widely performed in the Czech Republic (even in times of Czechoslovakia) it was due to the demanding technologies of copper alloy castings and also because the melting of alloys must be provided with the necessary melting facilities. [..] Read more

Abstract: Cooling is one of the critical points during aluminum casting. Improper cooling leads to a structure which isn't homogenous, full of internal and surface defects. [..] Read more

Abstract: Cu60Zr30Ti10 (at.%) metallic glass was prepared in two forms: as a rod of diameter 3 mm and length of 26 mm and as a thin ribbon wide 5 mm and thick 35 μm. Chemical composition of the alloys was as certain by Scanning Electron Microscopy (SEM) coupled with EDX analysis. [..] Read more

Abstract: In this study ultrafine grain structure evolution during high pressure torsion of commercial aluminum alloy AA6082 at increased temperature is presented. Two different initial states of the alloy were prepared by thermal treatment. [..] Read more

Abstract: Twin-roll cast AA3003 series aluminum alloy was subjected to several passes of asymmetric rolling at room temperature. This process is more effective in the grain refinement than conventional cold-rolling. [..] Read more