Browsing 2009 fascicula9 nr2 by Issue Date
Now showing items 1-20 of 32
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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) ... -
Study of Zro2/Co-Deposition with Cobalt from Chloride Electrolyte
(Universitatea "Dunărea de Jos" din Galați, 2009)The metal-matrix composites are materials in which the properties of a metallic host material are modified with addition of a second phase (ceramics) by electrodeposition process. The second phase can be hard oxides or ... -
Researches on the Corrosion Behavior for a Drawing Steel That Went Through Natural Ageing
(Universitatea "Dunărea de Jos" din Galați, 2009)The paper presents the results of a study on the corrosion behaviour of the sheets of drawing steel with 0,04% C gone through natural ageing and run for a period of 112 days from the moment of drawing. The researches ... -
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 ... -
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 ... -
Variation of Mechanical Characteristics for Thin Wall Tubes Processed in Ultrasonic Field
(Universitatea "Dunărea de Jos" din Galați, 2009)The paper presents the variation of mechanical characteristics of resistance and plasticity for thin wall tubes made of stainless steel 10TiNiCr180, processed in ultrasonic field. Decrease of mechanical characteristics ... -
The temperature Effect on Severely Deformed Aluminium by High Pressure Torsion
(Universitatea "Dunărea de Jos" din Galați, 2009)The process of deforming materials started to attract the interest of the researchers after the development of the severe plastic deformation techniques. A number of aluminium samples were severe deformed by HPT method ... -
The Mechanism of Phase Transformation to Obtain Zinc-Iron Coatings
(Universitatea "Dunărea de Jos" din Galați, 2009)Important changes in the ratio of constitutive phases take place during heating of galvanized parts due to Zn coating layer changed into Zn-Fe alloy. The work deals with a mathematical correlation between diffusion ... -
X-Ray Diffraction Analysis at Ultrasonic Welding
(Universitatea "Dunărea de Jos" din Galați, 2009)In the article [2] the author present experimental investigations regarding of residual stress distribution in weld bead vicinity of submerged arc welded naval plates. In this way, residual stresses from vicinity of weld ... -
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 ... -
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 ... -
Transparent and Conducting TIN Oxide Thin Films Deposited by Spray Pyrolysis
(Universitatea "Dunărea de Jos" din Galați, 2009)The chemical spray pyrolysis technique has been one of the major techniques to deposit a wide variety of materials in thin film form, for different applications. The most important control parameters for obtaining good ... -
Software used at Castings Production
(Universitatea "Dunărea de Jos" din Galați, 2009)The foundry industry has been developed worldwide, a number of software that can assist the design work and various processes in the production of castings. Current usage of such software by metallurgical engineers is ... -
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 ... -
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 ... -
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 ... -
Study of the RV52 Steel Plates Properties After Thermic Treatment
(Universitatea "Dunărea de Jos" din Galați, 2009)The thermal treatment of RV52 steel plates determines high mechanical properties such as: strength, wear resistance and tenacity. The normalized plate samples were studied to determine the effect of the tension release ... -
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 ... -
Time Scales of Phisico-Chemicaly Driven Processes in Desulphurization CaO-Al2O3 Slag
(Universitatea "Dunărea de Jos" din Galați, 2009)The paper is dealing with the expression of times scales associated to different physically and physico-chemically driven processes taking place on the slag side of the interface CaO-Al2O3 slags-steel, specific to 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, ...
