Open Access Conference Proceedings

Abstract: As a potential candidate for a biodegradable implant material, we designed the composition and investigated the properties of the magnesium alloy containing rare earth metals, namely yttrium and neodymium, with an addition of silver showing the evidence of antibacterial effects and promising corrosion rate in a body [2]. The as-cast Mg-2Y-1Nd-1Ag alloy exhibits hard regions of eutectics containing Y, Nd and Ag along the grain boundaries and contains also the long period stacking-ordered structure inside the Mg matrix. [..] Read more

Abstract: Aluminothermic reduction of magnesia under vacuum condition has been proved to be an effective way to extract magnesium from dolomite and magnesite. This thermal reduction process involves solid, liquid and vapour phases and the briquette preparation condition has a great influence on the extent of the reactions. [..] Read more

Abstract: First reference about existence of ultrahard composite in the TiC-ScCx system was made by G.V. Samsonov in the year 1962. [..] Read more

Abstract: Mechanical alloying has been becoming widely used method for preparation of metallic materials. Its advantage lies in the possibility of obtaining amorphous or nanostructured material. [..] Read more

Abstract: In the most majority of the cases, at the electronic components soldered with tin-based alloys was noted the germination and the growth of the whiskers, which have caused damages in all areas. Given the preliminary researches, to mitigate the occurrence of defects in electronic components, has been proposed a new soldering alloy from Sn-Cu-Ag family and a new obtaining technology based on melt spinning method. [..] Read more

Abstract: The paper describes an innovative method of determining cytotoxicity rate for non-transparent materials. Cytotoxicity is a very important property of materials in terms of their use in health care. [..] Read more

Abstract: In nickel-based turbocharger castings, defined macrostructure and microstructure are required in addition to internal homogeneity and mechanical and creep properties. The structure is given in particular by the orientation and maximum dimensions of dendritic and equiaxed grains and by the extent of admissible microporosity and carbide phases. [..] Read more

Abstract: Mechanical alloying is a method that allows producing mixtures of compounds in solid state. This paper investigates the possibility to produce by mechanical alloying ready-to-use cobalt powder doped with chromium carbide to be used as binder in cemented carbides. [..] Read more

Abstract: Due to the high biocompatibility of magnesium, magnesium based alloys are considered as suitable materials for the production of biodegradable implants such as the fixators of fractured bones or stents. The main insufficiencies of pure magnesium are lower yield and ultimate strength and high corrosion rate. [..] Read more

Abstract: Weight reduction by employing lighter alloys, composites, or stronger materials of a smaller cross in novel, multi-material design sections is increasingly becoming the key to success in nowadays material engineering. This is particularly representative for aircraft, automotive and train structures where energy efficiency is essential in order to minimize operating costs. [..] Read more

Abstract: Real-time monitoring of lightweight composite components by embedding additional sensors in the structure of composites becomes more and more popular in nowadays aerospace and automotive industry. However, polymer composites due to their low thermal stability are incapable of working at higher temperatures. [..] Read more

Abstract: The beta-transus temperature is very important for all beta-titanium alloys during their processing. This temperature is influenced by the chemical composition of the alloy. [..] Read more

Abstract: Biodegradable magnesium implants show great promise in improving quality of healthcare and reduction of costs by removing the necessity of a second surgery. In this work we study novel Mg-Y-Nd-Ag-based materials (total solute content less than 7 wt.%) envisaged for biodegradable implants. [..] Read more

Abstract: According to European Parliament and Council (ES) no. 443/2009 the emissions of CO2 in personal cars exhaust gases should decrease on 95 g/km till 2020. [..] Read more

Abstract: In this paper we focused on the influence of sintering conditions; purity of argon atmosphere and sintering time namely, on microstructural and mechanical characteristics of porous magnesium prepared by powder metallurgy. An argon with technical purity (99.996 vol.%) and argon purified by a magnesium getter were used as the sintering atmospheres. [..] Read more

Abstract: Microstructure evolution, Vickers hardness and Vickers microhardness were investigated in intermetallic TiAl-based alloy with nominal composition Ti-48Al-2Nb-1Cr-0.2Si (at.%). The samples prepared from the as-received ingot and centrifugally cast turbocharger wheel were subjected to the heat treatment consisting of isothermal annealing at temperatures ranging from 1150 to 1320 °C in protective argon atmosphere and air cooling to room temperature. [..] Read more

Abstract: Development of titanium matrix composites (TMCs) appeared to be an effective way to improve wear and friction properties of titanium, especially though the melting route approach. In this case, the reinforcements are formed during phase transformations, obtaining a good interfacial strength with the matrix. [..] Read more

Abstract: Single crystal products of metallic alloys allow to secure extremely high operation properties of final products. Single crystal turbine blades of the Fe-Ni based alloys and cast Fe-Ni-Co-Al-Cu-Ti and Fe-Co-Cr-Mo(W) based permanent magnets belong to the main products. [..] Read more

Abstract: The twinning activity and internal stress evolution in random textured polycrystalline magnesium were studied as a function of strain path changes using in-situ neutron diffraction method. The pre-deformation to different stresses in compression and tension, respectively was followed by application of load with opposite sign. [..] Read more

Abstract: Titanium and its alloys are promising materials in the dental filed because they have good biocompatibility, corrosion resistance and physical and mechanical properties. For that reason, they have many applications as crowns, inlays, bridges, dental implants etc. [..] Read more