Open Access Conference Proceedings

Abstract: Fracture surfaces of X70 steel DWTT broken samples are analyzed using statistical methods and fractal concepts. Applying self-affine fracture profile construction method and the first return probability method the Hurst exponent of ductile fracture areas has been found. [..] Read more

Abstract: Fe-25Cr-5Mo-0.82C alloy was synthesized in an arc furnace in high purity argon atmosphere and crystallized on water-cooled copper mould. The cross section of the ingot was examined by light microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and its Vickers hardness determined. [..] Read more

Abstract: The fatigue properties and microstructure of 08Ch18N10T steel used for production of the interior of a pressure water reactor VVER 440 were investigated. The influence of the service conditions was simulated using thermo mechanical strain controlled low cycle fatigue tests in the range from 150°C to 270°C. [..] Read more

Abstract: The by-pass station of steam turbines is a device, used to by-pass the steam from boiler to condenser by bypassing the turbine. It is especially used while starting operating conditions of the boiler, before putting the turbine-generator unit in service, or in the cases when the amount of stem produced in boiler is higher, then the amount of steam needed for operation of turbine and its accessories. [..] Read more

Abstract: In this study, glass surface is coated with thin films of TiO2 by using sol-gel route. TiO2 chemicals were used as precursors at the solutions prepared for film coating, and also methanol and acetyl acetone were used as solvent and chelating agent respectively. [..] Read more

Abstract: In this paper, were determined the effects of cutting tool coating material and cutting speed on cutting forces and surface roughness based on Taguchi experimental design method. Main cutting force, Fz is considered to be cutting force as a criterion. [..] Read more

Abstract: Cr2N0.62-11Ag nanocomposite coatings containing 11 wt.% of Ag solid lubricant were deposited on substrates made of Cr-V ledeburitic tool steel Vanadis 6 by reactive magnetron sputtering at a deposition temperature of 500 °C. The experiments consisted of long term annealing up to 24 h at temperatures of 300, 400 and 500 °C, respectively, in closed-air atmosphere. [..] Read more

Abstract: The technology of Laser Surface Re-melting (LSR) is used to modify the surface layer of bulk materials or coatings in order to improve their surface properties, usually wear resistance. In the case of thermally sprayed coating, its application leads to elimination of porosity and internal oxides on the coating splat boundaries. [..] Read more

Abstract: The high efficiency of the polymer coating is achieved only by the proper choice of thermal and other conditions during the formation of its structure. The aim the work is to study only the initial stage of physical and chemical processes by the formation of the structure of polymer coating, namely, the creation of a primer adhesive layer after the application of monomer paint solution on the steel sheet before to the polymerization. [..] Read more

Abstract: In this paper, protective properties of polymer films on the metal surface are analyzed. The simulation is performed by means of the Monte-Carlo method on the basis of three-dimensional lattice model of polymer system with orientational interactions [1]. [..] Read more

Abstract: This research deals with the influence of thermally sprayed HVOF (High Velocity Oxygen Fuel) coatings on fatigue life of components. HVOF coatings are now a widespread technology commonly used for additional treatment of component surfaces. [..] Read more

Abstract: Cathodic protection is applied especially to protection of coating fault on a buried pipe line in a soil. According to some authors, the mechanism of cathodic protection of carbon steel is a shift of open circuit potential into the immunity region or reducing of anodic reaction rate in the active state. [..] Read more

Abstract: Metals and their alloys are often used in the production of implants or stents, and are applied to a living organism. For this application it is necessary to provide for biocompatibility, i.e. [..] Read more

Abstract: The paper describes the corrosion resistance comparison of hot-dip zinc galvanized cast iron with flake graphite in relations to bronze. The practical application of investigated cast iron is planned as a materials for fitting elements working in corroding medium of sea water. [..] Read more

Abstract: The paper summarizes the result of laser cladding experiments design to observe the influence of single track overlap. The system combining solid state disc laser with power up to 5,3 kW and cladding head with coaxial powder feeding was used. [..] Read more

Abstract: Hardening of contact surfaces of milling head is centerpiece of this study. The most important point is to maintain defined processed part geometry. [..] Read more

Abstract: The article deals with chemical composition and mechanical properties of plasma nitrided layers after plasma nitriding process. Experiments are focused on using of plasma nitriding process for surface treatment of cavities with diameter of 8 mm. [..] Read more

Abstract: The inclusions size in context fatigue properties of plasma nitriding steel was studied. The size of inclusion, such as geometry and location, has remarkable influence to fatigue properties of steel 41CrAlMo7-10. [..] Read more

Abstract: In the study the research findings, regarding the application of innovative solutions from the field of the material science and medicine in the interior of modern ambulances, are described. VentureShield VS 7510 E film (I and II grade) was evaluated from the point of view of high sterility level of the interior of an ambulance. [..] Read more

Abstract: In the work fasteners - screws M8*80 made of carbon steel 23MnB4 were being examined that are conventionally protected against the corrosion by zinc galvanizing. The research aim was to compare the lifetime/effectiveness of different zinc coatings (galvanic, hot-dip and lamellar), as the anticorrosion protection of steel fasteners. [..] Read more