Liste des documents

Nombre total de résultats :2033
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Microstructural, morphological, mechanical and tribological characterization of nanocrystalline nickel and Ni-Co electrodeposited coatings

Mohamed HAMIDOUCHE, Nafissa KHENNAFI-BENGHALEM  (2016)
Article de conférence

The nanocrystalline nickel and nickel-cobalt coatings were electrodeposited on an A60 steel substrate in a modified Watts bath. The observation of the coatings produced by scanning electron microscopy (SEM) showed that the nickel coatings have a granular structure whereas the Ni-Co alloy... Voir les détails

Mots clés : Nickel coatings, Ni-Co coatings, microstructure, morphology, Micro-hardness, Tribological properties

DFT study of F atom adsorption on Si(001) surface

Lemya. Bouamama, Amel. Lounis, Abdelhamid. Ziane, Arezki. Mokrani  (2016)
Article de conférence

We have investigated the initial adsorption of an fluorine (F) atom on Si(001) surface by means of first-principles calculations using pseudopotential method implemented in SIESTA code. Three high-symmetric adsorption sites of F on Si(100) were examined : top, bridge and hollow sites. For an F... Voir les détails

Mots clés : DFT, SIESTA, Silicon, fluorine, adsorption

Structural, Morphological and Optical Properties of Zn(1−x)CdxO thin films grown on a glass substrate by spray pyrolysis method.

K. Bouzid, A. Abdelhak, A. Serrar, A. Roustila  (2016)
Article de conférence

Method on the glass substrate at 450°C.For Cd doping, various concentrations of cadmium nitrate Cd(NO3) (2–8 wt%) was used in the spraying precursor solution. The structural, Zinc oxide (ZnO) and ZnxCd1-xO thin films were deposited using a low cost spray pyrolysis morphological, and... Voir les détails

Mots clés : Cd-doped ZnO, Spray pyrolysis, X-ray diffraction, optical properties

Evolution of texture and residual stresses with the thickness for aluminum nitride deposited by dcMS on Si (100)

B. Riah, A. Ayad, J. Camus, M.A. Djouadi, N. Rouag, F. Boukari  (2016)
Article de conférence

This work presents a study of XRD measurements on the development of the fiber (0001) and residual stress with the film thickness. Aluminum nitride (AlN) films were deposited by dc magnetron sputtering (dcMS) on Si (100) substrates in Ar-Ngaz mixture, at different thickness. The texture... Voir les détails

Mots clés : AlN thin films, DC-PVD, Fiber texture, Asymmetry

The Inhibition Effect of Gum Arabic on the Corrosion of Carbon Steel in Hcl Medium

LOUAFI Ahmed, BENTRAH Hamza, DJELLAB Mounir, ALMI Sana  (2016)
Article de conférence

The inhibition effect of exudate gum from Acaciatrees (Gum Acacia, GA) on the corrosion of carbon steel API 5LX60in acidic media1 M was studied by weight loss,electrochemical polarization methods; also, surface morphology.The results of weight loss and electrochemical polarization methods... Voir les détails

Mots clés : Gum Arabic, corrosion, steel, inhibition efficiency, inhibitor

NUCLEATION AND FORMATION OF OXIDE FILM UNDER A MAGNETIC FIELD

M. Amirat, A. Beloufa, A. Dekkiche  (2016)
Article de conférence

Nucleation and formation of an oxide film in contact with sliding unidirectional dry were studied in a vacuum chamber with and without the application of a magnetic field to identify the role of the intensity of magnetic field on the oxidation wear. The wear tests of AISI 1045 steel / steel AISI 1045... Voir les détails

Mots clés : friction, wear, Oxidation, environment gas

Identification of Fe-Al intermetallic phases in aluminide coatings on mild steel

Sabrina Mendil, Said Azem, Kamel Taïbi  (2016)
Article de conférence

Mild steel were coated by hot-dipping in molten aluminum bath at 800°C and 1000°C for 90 minutes. Phase identification of the Fe-Al intermetallic compounds in the hot-dipped aluminide mild steel was carried out by using a combination of scanning electron microscope (SEM), energy... Voir les détails

Mots clés : Mild steel, Hot-dipping, intermetallic Compounds, Aluminide layer, EBSD.

A comparative study of potentiostatic and pulsed Electrodeposition of ZnS nanostructures

K. Ghezali, B. Boudine, L. Mentar, A. Azizi  (2016)
Article de conférence

Electrochemical, structural and optical properties of ZnS thin films deposited by either potentiostatic or pulsed electrodeposition were investigated. The grown thin films of ZnS from the both processes were studied by means of Mott-Schottky (MS), AFM, XRD, Raman and UV-Vis spectrometry... Voir les détails

Mots clés : ZnS, Mott-schottky, pulse, potentiostatic, XRD

Corrosion study of Neodymium-Iron-Boron alloys: Neutron reflectometry of the ultra-thin polymer film interfaces and effectiveness of polymer coatings

S. Benfattoum, A. LOUNIS, M. Azzaz, D. Miroud, B. Guedioura  (2016)
Article de conférence

Neodymium-iron-boron alloys are very sensitive, particularly to the air humidity. The aim of this work is to study the effectiveness of polymer coatings against corrosion in the cases cited above. This work is financially supported by the Research Thematic Agency in Science and Technology. In this... Voir les détails

Mots clés : rare earths, magnet, corrosion, polymer coatings

Structural and morphological characterization of thin films based on zinc oxide

F. Touri, A. Sahari, A. Zouaoui  (2016)
Article de conférence

Zinc oxide (ZnO) is a semiconductor wide direct gap (3.37 eV), which has many interesting properties (chemical, piezoelectric, optical, catalytic ...) .A wide range of applications makes it one of the most studied materials in the last decade, especially in nanostructured form. In this work, we study... Voir les détails

Mots clés : Zinc oxidation, thin layer, Anodic polarization, Zinc oxide