Open Access Conference Proceedings

Abstract: Due to the sudden sharp increase in tin demand, the production of tin through carbothermic reduction process requires refreshment by assembling important required data and disseminate to the potential producers. The current paper presents a review on different parameters that have been tested on different tin ores. [..] Read more

Abstract: An investigation of Eu and Dy doped yttrium aluminates/borates samples prepared by solid-state reaction in reduction/air atmosphere is presented. The structure of the synthesized samples was studied by powder X-ray diffraction. [..] Read more

Abstract: Tungsten–copper composites feature high corrosion and erosion resistance, very good thermal and electrical conductivity, low thermal expansion and good mechanical properties. They are used in a variety of demanding applications, such as arc-resistant electrodes, high voltage electrical contacts, heat sinks for integrated circuits, etc. [..] Read more

Abstract: Tungsten-based materials are the most prospective candidates for plasma-facing components of future fusion devices, such as ITER and DEMO. For joining of the tungsten armor to the cooling or structural parts, composites and graded layers can be used as stress-relieving interlayers.This work presents a feasibility study of W+Cu composites preparation by plasma transferred arc (PTA) cladding on tungsten substrates. [..] Read more

Abstract: The content of the paper is a brief description of the basic characteristics of the reactive diffusion in the dissolution of solid copper in the melt of tin solder. Furthermore, it deals with the theory of growth kinetics of intermetallic phases during heat treatment, and a description of lead-free solders and related problems during soldering. [..] Read more

Abstract: The paper sets an example of modeling the expansion and bed pressure drop of the cohesive and problematic material - titanium dioxide modified by Aerosil R972 in program Ansys / CFX - Fluent using two multiphase models, Euler Fluid-Granular Model and Dense Discrete Phase Model at certain predefined conditions in a square section fluidized bed cell. The variables bed pressure drop, particle concentration in volume and velocity field of solid particles were defined for the simulations in metallurgical processes.The research follows on from the previous study of simulating the arrangement of spherical particles with a diameter of 2-10 mm and compares them with the experiment, where it was discovered, that the square section fluidized cell achieves the best results with spherical particle arrangements of diameter 8 mm.. [..] Read more

Abstract: Magnesium and its alloys is a class of materials, which is still one of the most prospective hydrogen storage (HS) compositions. This is due before all to their high hydrogen sorption capacity and low cost. [..] Read more

Abstract: The jarosite sample was subjected to characterization by dichromatometry, gravimetric analysis, XRD, AAS, ICP, SEM and EDS. The particles of this compound are spherical and made up of rhombohedral microcrystals. [..] Read more

Abstract: The growth of industrial production dictates the need to search for new technologies for environmental protection. Complex titanium-containing reagents have proven themselves well in wastewater treatment processes of various origins, however, the processes of obtaining such reagents for the needs of water purification are practically not described in the literature. [..] Read more

Abstract: Material fatigue occurred on aluminum castings used in the electrical distribution network. Material analysis was performed on the damaged samples. [..] Read more

Abstract: With increasing interest in lightweight construction and cost-efficient sheet production methods, the twin roll casting of non-ferrous metals is constantly developing, due to the combination of several different process steps into one process. However, its challenge is the impossibility of direct recording of important process parameters such as temperature and pressure distribution in the rolling gap, in order to control product properties, due to the difficult process conditions. [..] Read more

Abstract: The paper studies the improvement of cavitation erosion resistance for Nimonic 80A alloy whose surface has been subjected to nitriding. The cavitation erosion tests were performed with an ultrasonic vibrating device in accordance to ASTM G32-2010. [..] Read more

Abstract: The high energy ball-milling (HEBM) procedure has been used for the preparation of magnetically hard/soft (1-x)SrFe12O19/xCo nanocomposite (with x = 0.1, 0.2 and 0.3). Effects of aging temperatures (800 - 1000 °C) on microstructure, morphology and magnetic properties have been studied. [..] Read more

Abstract: The paper investigates an approach to the synthesis of classical heat-resistant alloys by laser cladding (LC) or direct laser deposition (DLD). This approach corresponds to the concept of developing the production of small parties of metal products with the economically feasible use of additive technologies. [..] Read more

Abstract: Spark Plasma Sintering (SPS) or Field-Assisted Sintering Technique (FAST) is a powder metallurgical (PM) heat-assisted process, where loose metal powder is pressed to a compact. Powders, which are difficult to consolidate, can be processed much more efficiently than within the conventional PM process route, i.e. [..] Read more

Abstract: Mechanical and electrical properties of an Al–Er–Zr alloy were investigated. Microhardness and resistometry measurements were supplemented by transmission electron microscopy and scanning electron microscopy. [..] Read more

Abstract: Metallic networks are promising candidates for new age porous materials wherein porosity is induced by manoeuvring network architecture. Their properties are thus highly dependent on architectural parameters like fibre segment length, orientation of fibres, porosity etc., apart from being dependent on the nature of material and processing conditions. [..] Read more

Abstract: Welding of aluminum alloys with austenitic stainless steel is considered one of the most complex phenomena and is specific to high precision industries such as: aerospace, rail, cars and marine structures, as inflexible tolerance are required during the assembly of various engineering components. Joining of such alloys through conventional fusion welding processes is a difficult task because of the metallurgical incompatibility. [..] Read more

Abstract: Shape memory alloy represents metallic material that can return to its original forms, shapes, or sizes when subjected to a process of memorization between two transformation phases. The basic application of these materials is always simple, i.e. [..] Read more

Abstract: In the recent years it has been a tremendous interest in the complex concentrated alloys (CCAs), due to their novelty introduced by the multiple principal elements concept. As a new generation of structural materials, CCAs have the potential for a promising range of properties. [..] Read more