Căutare 2009 fascicula9 nr2 după Titlu
Afișează articolele 1-20 of 32
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Alumina Powder Properties Obtained by Neutralization Process of Sodium Aluminate
(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 ... -
Behavior of Ni/al2O3 Nanocomposite Thin Layers in Corroding Environment
(Universitatea "Dunărea de Jos" din Galați, 2009)This paper investigates the effects of adding alumina nanoparticles in the electrolyte bath on surface topomorphologies and structure of electrodeposited nickel. The influence on the corrosion process in NaCl solutions ... -
Corrosion Behaviour of Tombac Used in Cult Objects Manufacturing
(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
(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 ... -
Effects of Plastic Deformation and Temperature on Microstructural and Mechanical Properties of a CuAlNi Shape Memory Alloy
(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), ... -
Establishing the Constitutive Law of a CrMo Alloyed Steel
(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 ... -
Experimental Model for Pollutants Monitoring Into the Coke-Chemical Plant
(Universitatea "Dunărea de Jos' din Galați, 2009)The Coke-Chemical plants contribute heavily to producing and emitting in the atmosphere a big amount of polluting agents. Polluting emissions diminution and situating them within the international specific standards, ... -
Experimental Research Regarding the Obtaining of Obtaining of Friction Elements
(Universitatea "Dunărea de Jos" din Galați, 2009)Friction materials are used as bimetallic friction elements, consisting of a friction material layer sintered on a steel backing. Using the electron microscopy techniques (microprobe analyzer) some of the diffusion ... -
Generation, Morphology and Mineralogy of the Dust Particles from Off-Gas Blast Furnace
(Universitatea "Dunărea de Jos" din Galați, 2009)In order to elucidate the morphology and mineralogy of the dust from blast furnace, the fundamental aspects of its generation process were studied. A dust generated by the dry dedusting step of the cleaning process for ... -
Influence of Ph galvanic Baths on the Nickel Deposits
(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 ... -
Intercritical Thermomechanical Treatments of the Microalloyed Steel Products for Welded Structures
(Universitatea "Dunărea de Jos" din Galați, 2009)This paper shows the laboratory experiments made on several grade steels by applying some intercritical thermomechanical treatments; Two variants were used: “down-up” thermomechanical treatment with heating and rolling ... -
Mathematical Model Cooling Agglomeration Ferrius in Layer
(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 ... -
Modelling, Operation and Control of Multiterminal DC Connection for Offshore Wind Farms
(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 ... -
Monitoring of the Rolling Mill Vibration
(Universitatea "Dunărea de Jos" din Galați, 2009)These researches show the influence of mill vibration on the thickness profile of the stainless steel sheet. The alloy elements like Ni and Cr inside the stainless steel could amplify the rolling mill vibration and ... -
Morphological Aspects and Corrosion Behaviour of Phenol Formaldehyde/Zn Composite Coatings
(Universitatea "Dunărea de Jos" din Galați, 2009)The present work has the purpose of studying morphological aspects and corrosion behaviour of pure zinc and composite coatings having zinc as metal matrix and phenol – formaldehyde resin type Novolac (RESITAL 6358/1) ... -
Obtaining and Characterisation of Thermoresistive Pigments
(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 ... -
On the Corrosion Behavior of Organic Nanocomposite Coatings
(Universitatea "Dunarea de Jos" din Galați, 2009)Recently, researches on composite coatings of organic nature with the addition of metallic oxide nanopowders have shown an increasing corrosion resistance of metallic materials. Carbon steel shows an improved behavior ... -
Optimisation of Refractory Components of Sliding Gate Mechanism for Continuous Casting
(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 ... -
Redesigning a Jaw Crusher Using Value Analysis. Part II
(Universitatea "Dunărea de Jos" din Galați, 2009)The paper presents a complete study of VALUE ANALYSIS applied concretely to a selected piece of equipment. The phases and ITERATIVE operation of the Value Analysis method are presented. Value Analysis combines both ... -
Reseaeches Regarding the Elements Loss Through vaporization During the Elaboration Process LD Converter
(Universitatea "Dunărea de Jos" din Galați, 2009)The paper presents a series of researches regarding the vaporization of the component elements of the metallic bath and slag during refining in LD converter. Also, the main factors which influence the vaporization process ...
