Open Access Conference Proceedings

Abstract: Atmospheric plasma spraying utilizing initial powder materials in micrometric size has been successfully used for various applications in different fields of the industry over the past several decades. Nowadays, the new trend in plasma spraying is to use sub-micron or nano-sized powder feedstocks in the form of colloidal suspension. [..] Read more

Abstract: The paper wants to be a review of the own researches realized in the nonconventional treatments domain, corresponding to the magnetic field treatments applied to a steel of construction for industrial parts, for gears and some parts of industrial machines. The magnetic field applied under certain conditions during the cooling process of the sample in the case of the improvement treatments, modifies the properties of steel, the hardness, the corrosion resistance and the wear resistance increase.The studies on tribomodels during the dry friction processes determine the wear intensity for a certain type of tribomodel and for a certain type of material. [..] Read more

Abstract: The results of the corrosion resistance of hot-dip galvanized coatings obtained on bolts made of steel grade 23MnB4 have been presented in the paper. The bolts were subjected to various treatments (heat, mechanical and chemical) before application of the zinc coating. [..] Read more

Abstract: The results of the hydrogen concentration measurements in selected products, made of steel grade 41Cr4, are presented in the following paper. The reason for this project was the failure of the tower structure and the suspicion of brittle fracture caused by hydrogen in one of the hot-dip galvanized products made of steel grade 41Cr4, found in the wreckage of the tower. [..] Read more

Abstract: Laser remelting of thermally sprayed coatings is a promising possibility how to improve their functional properties. However, it requires precise control of processing parameters to achieve desired depth of remelting. [..] Read more

Abstract: In this study, the cyclic loading of steel samples 41CrAlMo7-10 (1.8509) were made. This steel is suitable for plasma nitriding proces. [..] Read more

Abstract: Plasma nitriding is widely used as a final operation to improve wear, fatigue and corrosion resistance of industrial parts. Nevertheless, corrosion resistance can be further increased by post-oxidizing or by manganese phosphate conversion coating. [..] Read more

Abstract: An increase in surface absorptivity can be helpful with a number of laser heat treatment processes. Absorptivity can be increased by, for example, absorption coating or surface oxidation. [..] Read more

Abstract: The zinc coating and/or zinc alloyed coating is one the most frequently used type of corrosion protection. This study was carried out to investigate and evaluate the corrosion behaviour of aluminium zinc alloy coated steel sheet at atmospheric condition. [..] Read more

Abstract: In this article, the reactions and optimal parameters were investigated for molybdenum layers produced on aluminum substrate using single beam ytterbium fiber laser. To produce these layers the molybdenum powder (25–45 µm in size) was placed on the aluminum sheet substrate and successfully treated – along the entire length with 16 different irradiation modes. [..] Read more

Abstract: The contribution deals with study of adhesion organic coating systems for the repair of a damaged vitreous enamel coat. Vitreous enamel is resulting product of the physiochemical reactions in the process of heat glass forming of the complicated chemical constitution with next components of the inorganic character and connecting nesting characteristics of the glass and ceramic with ability of the adhesion to metal. [..] Read more

Abstract: Thin film solar technology is used in various devices that convert the sun light into electrical energy. These applications have been crucial for human life since they supply us clean and alternative energy sources. [..] Read more

Abstract: The bulge test apparatus designed for the measurement of mechanical material properties of thin films was constructed and tested. The principle of the test is to apply pressure on a free-standing membrane, to measure the membrane shape and to analyse the results. [..] Read more

Abstract: Carbonitriding combines the effects of saturation of the surface of the component with nitrogen and carbon simultaneously. The layer has a hardness approaching 1000 HV and is highly resistant to galling and abrasion. [..] Read more

Abstract: The article deals with porosity of compound layers after gas and plasma nitriding. Experiments are focused on using of gas and plasma nitriding processes for surface treatment. [..] Read more

Abstract: The purpose of these studies is to compare the parameters of the galvanic process using a conventional method for electrodeposition of ZnNi coating with a new method using a membrane system. The study was conducted on a pilot production barrel line using electrolytes operating in industrial conditions. [..] Read more

Abstract: Twin-roll cast Al-Mg-Sc alloy was processed by equal-channel angular pressing in order to produce ultrafine-grained structure. The microstructure was studied by the means of scanning electron microscopy, electron back-scatter diffraction and transmission electron microscopy. [..] Read more

Abstract: The study deals with advantages and disadvantages of aluminum alloys application for oil and gas extraction. Aluminum alloy applications in drilling pipes, tapered and casing tubing as well as in raisers to extract hydrocarbons were widely known for a long time. [..] Read more

Abstract: The recrystallization process of Mg-Ce alloy after high-pressure torsion (HPT) was investigated using differential scanning calorimetry (DSC) technique. The DSC results show that the recrystallization peak temperature increases with increasing the heating rate which confirms that recrystallization is thermally activated and kinetically controlled. [..] Read more

Abstract: Using nanoparticles as reinforcement for aluminum matrix composites allows significantly increase mechanical and operational properties of details. However, input of exogenous nanoparticles into the aluminum melts is associated with significant technological difficulties caused by their agglomeration and poor wettability with liquid aluminum. [..] Read more