Browsing 2009 fascicula9 nr2 by Issue Date

Now showing items 21-32 of 32

    • Effects of Plastic Deformation and Temperature on Microstructural and Mechanical Properties of a CuAlNi Shape Memory Alloy 

      Gurău, Carmela; Gurău, Gheorghe (Universitatea "Dunărea de Jos" din Galați, 2009)
      In Cu 12.88% wt.Al4 %wt. Ni shape memory alloy the influence of plastic deformation and thermal treatments on the microstructures and hardness were studied by optical microscopy, scanning electron microscopy (SEM), ...

    • The Steam-Secondary Source of Energy in Metallurgy 

      Ivănescu, Lilica (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper is focused on a study of how to use the steam from recovery boilers of LD converters to produce electricity in turbine generators and heat in a heat network.

    • Establishing the Constitutive Law of a CrMo Alloyed Steel 

      Cănănău, Nicolae; Alexandru, Petrică; Gurau, Liviu; Gurău, Gheorghe (Univrsitatea "Dunărea de Jos" din Galați, 2009)
      The paper shows the results of the researches for establishing the equation of the deformation behavior of alloyed steel with chromium and molybdenum. The behavior law is established in the experimental way, using the ...

    • Modelling, Operation and Control of Multiterminal DC Connection for Offshore Wind Farms 

      Drăgan, Mircea Viorel; Drăgan, Cristina Mădălina; Drăgan, Crina Violeta; Hanganu, Doru (Universitatea "Dunarea de Jos" din Galați, 2009)
      Renewable energy systems are tending to become more and more present in the energy market and wind power has already proven its potential. Wind parks of thousands of MW are planned to be place into sea faraway from the ...

    • Waste Minimization by Reuse and Recycling 

      Negoiță, Daniela L.; Ion, Ion V. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Recently, pollution prevention directs attention towards the elimination or reduction of undesired by- products within the production process itself before treatment. On the long term, pollution prevention through waste ...

    • Influence of Ph galvanic Baths on the Nickel Deposits 

      Poroch-Serițan, Maria; Gutt, Gheorghe; Severin, Traian; Bobu, Maria (Universitatea "Dunărea de Jos" din Galați, 2009)
      The influence of pH on cathodic and anodic current efficiency, surface quality and morphology of nickel deposit in the electrolyte solutions of the Watts bath type was investigated. Cathodic current efficiency of nickel ...

    • Optimisation of Refractory Components of Sliding Gate Mechanism for Continuous Casting 

      Munteanu, Viorel (Universitatea "Dunărea de Jos" din Galați, 2009)
      New design techniques have been developed to optimize refractory components of sliding gate mechanism for continuous casting of steel. The overall objective is to increase CC productivity as well as steel quality by using ...

    • Corrosion Behaviour of Tombac Used in Cult Objects Manufacturing 

      Hagioglu, P.; Gheorghieș, c.; Cantaragiu, A.M.; Boiciuc, R.; Țigău, N. (Universitatea "Dunărea de Jos" din Galați, 2009)
      Corrosion of metals and metallic alloys is due to their thermodynamic instability in relation to their oxidation form. Corrosion tests performed in this work simulate the exposure conditions in different environments of ...

    • Development of Blade Design for Small Hawt Adapted for Lower Values of Wind Speed 

      Badea, Nicolae; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper aims at studing, theoretically and experimentally, the influence of turbines blade profile on output power, in order to decrease effective domain to smaller wind speed, specific to Galati area. Studies have ...

    • Alumina Powder Properties Obtained by Neutralization Process of Sodium Aluminate 

      Perušic, Mitar; Mićić, Vladan; Obrenović, Zoran (Universitatea "Dunarea de Jos' din Galați, 2009)
      Today, the most production of alumina is used for aluminum production [1, 2] (metallurgy alumina), minor production of alumina is used for special purpose, as fire-resistant materials, electro porcelain and etc., and ...

    • Mathematical Model Cooling Agglomeration Ferrius in Layer 

      Vasiliu, Adrian (Universitatea "Dunărea de Jos" din Galați, 2009)
      Mathematical model is based on discretization agglomeration areas layer deposited on very small. The τ Δ cooling time and the elements of space and elements xi time relationship is discretization as volume control. Based ...

    • Obtaining and Characterisation of Thermoresistive Pigments 

      Sandu, Andrei Victor; Vasilache, Violeta; Sandu, Ion; Saviuc, Mihaela; Sandu, Ioan Gabriel; Popa, Ioan Marcel (Universitatea "Dunărea de Jos" din Galați, 2009)
      The paper describes the obtaining and chemical and physico-structural characterisation of a green thermoresistive pigment. The pigment is made of ZnO dopped with Sb, Bi, Cr, Co and Fe oxides and it is used at mosaics and ...