This paper presents the research results regarding processing, characterization and behavior of carbon coated alloys. Metallic support, CoCrTi and TiAlNb alloys, was developed and produced using classical molding technique and then was carbon coated using a graphitized material by a magnetron sputtering device in different conditions. The materials were characterized by mechanical, structural and electrochemical point of view. The determined characteristics

The paper presents the research results about the achievement and characterization of some new Ag-SnO2-MeO (MeO = Bi2O3 and CuO) ecological electrical contact materials as substitutes of the toxic and carcinogenic Ag-CdO ones. The new materials were obtained from very fine and uniform Ag-SnO2 chemical powders mixtures doped with MeO. These were realized by a wet way, in an AgNO3 aqueous solution containing SnO2 and MeO particles in suspension, by

A fluorosilicate glass-ceramic containing rare earths such as europium (Eu) was realized in order to be used as information 3D optical data storage media. Photosensitive agents: silver (Ag) and cerium (Ce) has been used for obtaining the photosensitivity properties. The material structure and properties were investigated by XRD, SEM, AFM, TEM, confocal microscopy and photoluminescence spectroscopy. The measurements revealed the presence of NaF nanocrystals

The different carbon mesophase precursors as coal tar and petroleum pitches were analyzed for studying the mesophase formation. The influence of precursors characteristics, processing parameters (temperature, heating rate) on the development of mesophase stage was analysed. Raw materials were characterized from physico-chemical point of view (softening point, benzene insoluble fraction etc). The mesophase samples were characterized by optical, electronic

The aim of this study was to elaboration of β- TCP foams with good compressive strength, by the polymeric sponge technique that typically produces open-cell structures: polyurethane impregnated with ceramic slurry, is burned out leaving a porous ceramic. For experiments was used two type of the polyurethane with different pore sizes. Porous samples were characterized with optical Microscope Carl Zeiss NU2, Material Testing Machine Zwick T1-FR005TN,

Exchange-coupled Nd2Fe14B/a-Fe nanocomposite magnets receives considerable research interest, because these are regarded as promising candidate materials for permanent magnets, with an adequate performance while keeping the content of relatively expensive Nd low. The advantage of these new magnetic materials are the lower rare earth content (and consequently, cheaper magnets with better corrosion resistance). The Nd2Fe14B/a-Fe nanocomposites were