Căutare 1993 -2018 după Subiect "corrosion"

Afișează articolele 21-31 of 31

    • Studies About Electrochemical Plating with Zinc-Nickel Alloys 

      Gutt, Gheorghe; Vasilache, Violeta; Poroch-Serițan, Maria; Vasilache, Traian (Universitatea "Dunărea de Jos" din Galați, 2007)
      The electrochemical deposition of zinc and combinations with elements of the 8th group of the Periodic System (nickel, cobalt, iron) have good properties for anticorrosive protection, compare with pure zinc. For steel ...

    • Surface Hardening by Nitration for Some Stainless Austenite Steel Types 

      Dima, Ovidiu; Cazacu, Nelu (Universitatea "Dunărea de Jos" din Galați, 2006)
      Stainless austenite steel types have a good resistance to corrosion in different natural, industrial environments but their hardness and mechanical resistance are low enough. In order to assure an increased resistance ...

    • The Chemical and Metallurgical Analysis of Cooper-Based Shape Memory Alloys 

      Achiței, Dragoș Cristian; Minciună, Mirabela Georgiana; Vizureanu, Petrică (Universitatea "Dunărea de Jos" din Galați, 2015)
      The paper presents some aspects on the thermo-mechanical fatigue of shape memory alloy, a documentary synthesis of their industrial applications and chemical aspects concerning the use of these alloys in biomedical applications

    • 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 ...

    • The Different Practical Application of Niobium Carbide Coatings Elaborated by CVD Process 

      Constantinescu, Stela (Universitatea "Dunărea de Jos" din Galați, 2016)
      In this paper, the different application of niobium carbide coatings onto hard carbide substrate was investigated using scanning electron microscope (SEM), Xray diffractometer (XRD) and micro-hardness. The paper conducted ...

    • The Influence of Waste Composition on the Pumping System Corrosion 

      Perju, Manuela-Cristina; Savin, Cristina; Bejinariu, Costică; Nejneru, Carmen; Achiței, Dragoș-Cristian (Universitatea "Dunărea de Jos" din Galați, 2017)
      Wastewater piping systems in urban agglomerations or industrial areas have problems with the wear and tear of equipment and water transport pipelines used. The problems are related to hydromechanics wear and corrosion ...

    • The Protective Behaviour Titanium Nitride Coatings 

      Constantinescu, Stela (Universitatea "Dunărea de Jos" din Galați, 2015)
      The experiments conducted to obtain a thin layer of nitride through the vapour chemical deposition method have followed an original path to obtain TiN directly in the working room thus avoiding the import of these ...

    • The Study of Metal-old Wood Interactions Under the Influence of Pedological Factors 

      Sandu, Ion; Hayashi, Mikiko; Quaranta, Marta (Universitatea "Dunărea de Jos" din Galați, 2008)
      In the manufacture of wood objects, for binding and strengthening were used nails, cramps and other metallic elements, which in the archaeological site suffered degradation and deterioration processes, specific to ...

    • Time Analysis of King Mattehias the IST Sculptural Group 

      Sabău (Chelaru), Julieta Daniela (Universitatea "Dunărea de Jos" din Galați, 2010)
      The paper presents a study on the degradation of the King Matthias I sculptural group caused by environment factors and influenced by the casting technology and by the assembling method. During this study, samples from ...

    • Tribocorrosion-insight Into Material Degradation in Specific Environments 

      Bașa, Sorin-Bogdan; Benea, Lidia (Universitatea "Dunărea de Jos" din Galați, 2014)
      Tribocorrosion is an irreversible surface degradation mechanism of a metallic and/or non-metallic material as a result of its physicochemical and mechanical interactions during relative motion (friction, sliding, impact, ...

    • XRD Analysis in Front of a Corrosion Crack Tip 

      Gheorghieș, C.; Levcovici, S.; Păunoiu, V.; Gheorgieș, L.; Oancea, C.; Ostache, I.; Alexandru, P. (Universitatea "Dunărea de Jos" din Galați, 2008)
      During exploitation of the heat exchangers some damages can appear in the contact region between the gaskets and the stainless steel walls. The studies upon the material were performed using SEM microscopy, X-ray ...