2012 fascicula9 nr2

 

Înregistrări recente

  • The Corrosion Behaviour of Aluminum Alloy 2024-T3 in Acidic Environments 

    Hotea, Vasile; Juhasz, Jozsef; Pop, Elena; Iepure, Gheorghe; Pop, Aurica (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    This research aimed at analysing the acidic corrosion behavior of aluminum alloy 2024-T3 commonly used in the aerospace. We study the variation of corrosion rate with immersion time at different values of H2SO4 concentration ...

  • Influence of Micro Glass Beads Added in PBT Matrix on the Mechanical Properties of Composites 

    Botan, Mihail; Georgescu, Constantin; Deleanu, Lorena (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    This paper presents the influence of adding materials (micros glass spheres) in a matrix of PBT on several mechanical properties: elasticity modulus, stress at break , elongation at break, energy at break. The mechanical ...

  • Physico-Chemical Water Treated with Sonic Generatir and Al2(SO4) Coagulant 

    Şerban, Anca; Bordei, Marian; Ciurea, Aurel; Burtea, Mariana Carmen (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    This paper is a study on the problem of using ultrasound in the treatment of raw water. It highlights the effect of ultrasounds produced by the experimental sonic ultrasound generator through the physico-chemical analysis ...

  • Increase the Steels Purity cast in Vacuum 

    Mincu, Valentin; Constantin, Nicolae (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    The need to develop products with special characteristics and high mechanical properties led to the introduction of plastic deformation of semifinished materials. Special purpose products are produced from slabs, ...

  • The Dental Technology in Art Foundry 

    Florea, Gheorghe; Doniga, Ana; Florea, Bogdan (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    The paper presents results of a study undertaken to implement the dental casting technique of small parts characterized by extremely complex drawings of surfaces and thicknesses reduced specific objects. During the study ...

  • Performance Management System for purifyng Polluted Industrial Water 

    Dragomir, Ştefan; Dragomir, Georgeta; Bordei, Marian (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    In this paper we show an integrate system of water management and an efficient solution that is a floating dock, placed in the harbour area. Water quality is one of the most important elements for life support and ...

  • The Influence of Steam Treatment on Mechanical Properties and Abrasive Wear Behavior of Sintered P/M Steels 

    Marin, Mihaela; Potecaşu, Florentina; Drugescu, Elena; Potecaşu, Octavian; Alexandru, Petrică (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    In this paper is a study of the influence of steam treatment on sintered P/M steels, for three different types of powder. The abrasive wear of steam-treated sintered iron is analysed by abrasion tests. The specimens were ...

  • Neutralization of Hazardous Waste in Vitreous Mass of Glass 

    Vlad, Maria; Movileanu, Gelu; Marcus, Iuliana; Florea, Gheorghe; Cantaragiu, Alina (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    The paper presents studies concerning the neutralization of hazardous waste containing metal ions by embedding them in vitreous matrix which are chemically stable materials. The main analysed factors are: chemical ...

  • Investigation of Corrosion Protection by Chemically Applied Patina on Artistic Bronzes 

    Sabău (Chelaru), J.D.; Mureşan, L.M.; Soporan, V.F.; Nemeş, O.; Kolozsi, T. (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    Increase of pollution in recent years, requires monitoring of the corrosion behavior of artistic bronzes coated with syntetic patina, in urban atmosphere. This present work aims to investigate the corrosion rezistance ...

  • Study for Evaluation and Optimization of Mineral Composition and Structure of Iron Ore Granulation in Sintering Process 

    Mogoş, Paul Petruş; Constantin, Nicolae; Ittu, Sînziana; Anca, Denisa-Elena; Harcea, Lavinia-Marilena (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    The characterization of iron ore particles is of vital importance for the study of mineral composition. The specific surface area of iron ore particles can be measured by laser diffraction, and mathematical models (based ...

  • Microstructural Evolution of al 1100 Aluminum Subjected to Severe Plastic Deformation 

    Gurău, Gheorghe; Gurău, Carmela (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    The goal of this document is to promote a sequence of bulk-deformation processes able to produce ultrafine grain and also nanostructured wires with adequate length to be interesting for processing in metallurgical industry. ...

  • Properties of Slags in the System CaO-MgO-Al2O3-SiO2, Important in Deoxidization and Desulphurization of Low Carbon Aluminium Killed Steels 

    Niţă, Petre Stelian (Universitatea "Dunărea de Jos" din Galaţi, 2012)
    Properties of refing slags belonging to the system CaO-MgO-Al2O3-SiO2 are important in simultaneous or succesive refinig treatment processes in the ladle and other refing metalurgical reactors. The efficiency of treatments ...