Căutare după Autor "Nejneru, Carmen"

Afișează articolele 1-7 of 7

    • Analysis of Titanium Inteface and Tungsten Exterior layer Thickness Coated by Vibrator Electrode Method 

      Perju, Manuela Cristina; Gălușcă, Dan-Gelu; Nejneru, Carmen; Vizureanu, Petrică; Lărgeanu, Anca-Elena (Universitatea "Dunărea de Jos" din Galați, 2009)
      The goal of this paper is to create metallic materials with superior functional performances. The layer obtained by electrode vibrator method must have a very good adherence on part surface and a high chemical and thermal ...

    • Deposition Technologies for Obtaining thin Films with Special Properties 

      Țugui, Cătălin-Andrei; Vizireanu, Petrică; Nejneru, Carmen; Perju, Manuela-Cristina; Axinte, Mihai; Bălțatu, Simona-Mădălina (Universitatea "Dunărea de Jos" din Galați, 2015)
      The properties of metallic materials can be improved by deposition of materials. The coating has a tear strength and better hydro-abrasive corrosion. The thin layer deposition has a thickness of less than 10 micrometers. When ...

    • Hardening of the Grey Cast Iron Through the Vibrating Electrode Method Using a WC Electrode and in Combination with Ti Electrode 

      Perju, Manuela Cristina; Nejneru, Carmen; Răileanu, Tudor; Axinte, Mihai; Hopulele, Ioan (Universitatea "Dunărea de Jos" din Galaţi, 2008)
      There have been tested samples of grey cast iron, the hardening being made through WC coating through the vibrating electrode method with a layer, two layers and through double layers combined with Ti and TiC. Besides ...

    • Quality Surface Analysis for Polarized Grid Plasma Nitriding 

      Axinte, Mihai; Perju, Manuela-Cristian; Nejneru, Carmen; Hopulele, Ion; Cimpoeșu, Iulian (Universitatea "Dunărea de Jos" din Galați, 2013)
      For the study regarding the effect of the polarized grid a prototype plasma nitriding facility was used. A polarized grid was placed inside the working chamber, into the space between the anode and cathode, a negative ...

    • Researches Regarding Temperature Influence on Classic and Synthetic Quenching Medium 

      Grecu, Adrian; Nejneru, Carmen; Axinte, Mihai; Hopulele, Ion; Gălușcă, Dan-Gelu (Universitatea "Dunărea de Jos" din Galați, 2009)
      In this paper were analyzed experimental graphics for quenching cooling curves of oil at 20°C,40°C,60°C, 80°C and carboxymethyl cellulose (CMC) 1,5% solution in water at the same temperatures. Velocity cooling was studied ...

    • The Correlation Between Mechanical Characteristics and Technological Parameters in Heat Treatments Applied to Moulding Aluminium Like at Si5Cu1 

      Nejneru, Carmen; Gălușcă, Dan-Gelu; Carabet, Roxana-Gabriela; Achiței, Dragoș; Cimpoeșu, Nicanor (Universitatea "Dunărea de Jos" din Galați, 2006)
      The paper contains an experimental study of colligating the technological parameters of the artificial aging operation namely time and soaking temperature with hardness and mechanical strength properties gained after the ...

    • 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 ...