Open Access Conference Proceedings

Abstract: Examined FeAl deposits were produced by low-pressure cold spray technique using heated air (300 °C, 15 bar) as working gas. Although metal powders were mixed in ratio 60/40 at% Fe/Al, the final chemical composition of the 8-10 mm thick deposits changed strongly favouring aluminium (approximately 80 at% Al). Samples consisting of the deposited material were annealed isothermally in argon protective atmosphere. [..] Read more

Abstract: iron aluminides are known for their excellent oxidation and corrosion resistance. If they are exposed to hostile environment, a protective Al2O3 layer creates on its surface. [..] Read more

Abstract: Aluminium alloys are prospective materials that can be used in wide range of applications requiring good weight-to-strength ratio, convenient corrosion resistance and others. However, low thermal stability is a problem that limits their use in applications with temperatures typically exceeding 300 °C. [..] Read more

Abstract: Zn and Mg- based alloys are promising materials for medical implants because the mechanical characteristics of their alloys are close to human bone and zinc and magnesium are relatively non-toxic. In addition, magnesium is well-known for providing optimum corrosion rates under specific conditions. [..] Read more

Abstract: The purpose of this research was development of the model for temperature field analysis under friction stir welding. Mathematical asymmetric heat source model was studied, its’ capability in comparison with experimental results was proved. [..] Read more

Abstract: The use powder mixtures, which consists of strip-casting (Nd,Pr)-Fe-B alloy and DyH2 hydride, allows the high-coercivity magnets to be prepared. The stability of the reached high magnetic characteristics in the course of both low- and high-temperature heat treatments was shown to be related to the evolution of grain structure of the magnets. [..] Read more

Abstract: Lightweight is one of methods for low-carbon design. Based on the lightweight applications potential of metal composite bulks and on the fact that the interface between metals is externally visible currently, this study aims to investigate the feasibility to create core-shell type metal composite bulks. [..] Read more

Abstract: Ferrochromium is one of the important alloying materials used in the production of stainless and high-alloy ferritic steels. The carbothermal reduction of chromite with graphite under argon atmosphere was studied by differential thermal analysis up to 1350 °C and the effects of mechanical activation on the chromite structure was investigated using of X-ray diffraction analysis and scanning electron microscopy. [..] Read more

Abstract: In the article the results of testing the moulding sand based on alumino-silicate microspheres matrix with organic binder were presented. Developed moulding sand, which application is seen in the role of moulding or/and core, is supposed to be used for the implementation of thin-walled casting, which examples are so-called skeletal castings (3D), characterized by a small thickness of wall and strongly developed heat transfer surface in the process of crystallization. [..] Read more

Abstract: In this study, Cu - 1.5 wt.% Cr - 0.5 wt.% Zr alloy was prepared by powder metallurgy (PM) method. Cu-Cr-Zr powders were pressed under 390 MPa uniaxial compression and sintered at 1000 °C for 2h. [..] Read more

Abstract: In this study magnesium based composite AX41 reinforced with short Al2O3 fibers were investigated. In-situ neutron diffraction has been applied to study deformation mechanisms under compressive deformation. [..] Read more

Abstract: Sintered Nd-Fe-B permanent magnets with a medium coercive force were fabricated using a strip-casting alloy prepared at the VSB-TU Ostrava. Powders prepared by hydrogen decrepitation and subsequent milling were compacted in a magnetic field and sintered at T = 1340 K (for 2 h). [..] Read more

Abstract: The powder mixtures of B2O3 added-Magnesite Waste-Quartz-Kaolinite-Alumina were mechanically activated in a planetary ball mill for 1 hours. The structural alterations and thermal behaviour of the powder mixture were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermal analysis (TG-DTA). [..] Read more

Abstract: We performed calculations and recounts of various parameters related to the first quantitative study on the nucleation and growth of a catalyst model dispersed Pd/thin MgO(100) which was deposited at substrate temperatures ranging from 573 K - 1073 K. This simulation was performed by developing a new programs using Fortran. [..] Read more

Abstract: In this paper was proposed to design new casting alloys on the base of the Al-Mg-Si system using Li addition to achieve precipitation strengthening effect and alloying by Ti+Zr to achieve saturation of solid solution and grain refinement effect. The as-cast and heat treated structure of permanent mould casting of AlMg5Si2Mn containing 1.0 wt.% Li and 0.1 wt.% Ti+0.1 wt.% Zr alloys was investigated by differential scanning calorimetry, microhardness measurements, scanning and transmission electron microscopy and energy dispersive X-ray analysis. Mechanical properties of these alloys were investigated with modern automated ball indentation method. [..] Read more

Abstract: The own technologies and the quality of the finished products affect the position of the company in the market and hence the existence of this company. In the paper structure of nonconformities of the metal headwood screws was presented. [..] Read more

Abstract: The study deals with numerical modelling of the ductile fracture and failure of elements subjected to static tension in the spatial stress state. The analysis was conducted for notched specimens made of S235JR steel in the high stress triaxiality condition. [..] Read more

Abstract: The production of iron in blast furnaces involves a number of entirely different processes such as: chemical, mechanical, and physical. The input materials often contain several negative elements, such as heavy metals. [..] Read more

Abstract: The quality of ore raw materials significantly affects the technological aspects of the blast furnace process. The comparison of iron ores is complicated because of the wide range of parameters which can be used to evaluate the ores. [..] Read more

Abstract: Competent, disciplined and loyal workers represent, in addition to a realistic and suitably elaborated business plan and the associated financial resources, technical and technological equipment, and logistic support, the basis of success, progress, development, and competitiveness of every single industrial company. One of the aims of both authors of this article was in particular to highlight the significant and irreplaceable role and the importance of competencies as one of the segments of the process of human resources management, necessary to define and identify the required abilities, knowledge, and skills related to the anticipated performance of specific work activities that have become the common language of workers in industrial companies. [..] Read more