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  • Behaviour of dislocations near phase boundaries inbicrystals of FCC materials: Au-X, X = Pb, Cu and Ni 
    Ouchtati, A.; Khalfallah, O. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    The mechanical properties of materials are determined by the interactions between defects found in the crystal. In a bicrystal of bimaterials, the result forces exercising on the matrix dislocation near and parallel to an ...
  • Caractérisation physique de matériaux hybride résultante de Polyaniline et Nb3Sn 
    Boubekka, O.; Ouili, Z.; Alliouche, H. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    Les polymères conducteurs ont fait l’objet d’un intérêt particulier depuis prés de deux décades en vue de définir une nouvelle classe de matériaux pour l’électronique. Dans ce travail, nous avons étudié spécialement le ...
  • Characterization and thermal analysis of some Al-Mg-Si sheets 
    Chahdane, A.; Boubertakh, A.; Khelil, S.; Aouabdia, Y.; Abid, T. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    The knowledge of the mechanical behaviour of Al-Mg-Si alloys during a heating cycle is very important. Metallographic investigation of samples of these alloys allows us to know the change in the grain size. X ray diffraction ...
  • Characterization of PbS nanoparticles trapped in Y zeolite by X ray diffraction and scanning electron microscopy 
    Tebani, H.; Keghouche, N. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    The present study examines the PbS semiconductor nanoparticles trapped in Y zeolite synthesized at room temperature via a simple chemical reaction when 2-mercaptoethanol noted RSH was used with a different amounts as a ...
  • Elaboration and characterization of iron hydroxide thins films prepared by Dip – Coating 
    Berkane, H.; Chekour, L. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Theiron hydroxide β-FeOOHisamaterialwidely used invariousfields such asoptical, electronics and other. The object ofthis work is theoptimization of the parametersfor the development ofthin layers ofiron hydroxidesusing the ...
  • Elaboration et propriétés structurales des nanoparticules bimétalliques Ni-Ce et Ni-Pt supportées sur α-Al2O3 
    Seridi, F.; Chettibi, S.; Keghouche, N. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    L’objectif de cette étude est la préparation et la caractérisation de nanoparticules bimétalliques Ni-Ce et Ni-Pt supportés sur α-Al2O3. Ces matériaux sont testés comme catalyseurs dans la réaction d’hydrogénation du ...
  • Etude théorique structurale et spectroscopique infrarouge et Raman de 4,6-Dichloro-2-Methylpyrimidine 
    Medjania, M.; Brihia, O.; Hamdounia, N.; Boudjada, A.; Meinnel, J. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Dans le cadre de ce travail nous présentons les résultats des calculs pour la détermination de la conformation moléculaire dans le produit 4,6-dichloro-2-methylpyrimidine obtenu à partir du calcul théorique basé sur la ...
  • Evolution of the structural properties of sol-gel synthetized ZnO with solid phase and solution-based aluminum dopingat different annealing temperatures. 
    Mahcene, F.; belabed, N.; Gouder, M.; Kasouit, S.; Chari, A.; Chaieb, A. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    We report here on the effect of aluminum doping and annealing temperature on the structural properties of ZnO, synthetized using the Sol Gel method. Aluminum doping was performed in two ways, either by adding AlCl3 to the ...
  • Green synthesis and study of Cuprous Oxide nanoparticles 
    Kerour, A.; Boudjadar, S. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    Recently, biosynthesis of nanoparticles has attracted more attention due to their different advantages as an eco-friendly, low cost and non toxic alternative approaches. In particular, metal oxide nanoparticles are receiving ...
  • Hydrothermal synthesis and characterization of ZnS nanoparticles 
    Boulkroune, R.; Sebais, M.; Ayadi, M.; Halimi, O. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Nanostructured materials have attracted considerable interest because of their unique physical properties and potential applications in optics and electronics. Zinc sulfide is a direct wide band gap semiconductor of the ...
  • IF steel recrystallization: nucleation stage linked to internal misorientation parameters 
    Ayad, A.; Ramoul, M.; Rouag, N.; Rollett, A. D.; Wagner, F. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    Microstructure evolution during deformation and recrystallization can be followed by several misorientation parameters, deduced or calculated from EBSD data, such as: BC (Band Contrast), GOS (Grain Orientation Spread), GND ...
  • Interaction Elastique Dislocations – Joints Interphase dans des bicristaux céramique : Effet de l’orientation de l’axe de rotation 
    Ayadi, A.; Khalfallah, O. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    L’interaction élastique est à l’origine de la force image qui s’exerce sur la dislocation et qui conduit à sa mise en mouvement en l’attirant vers l’interface ou en la repoussant. Les effets de la force image sur dislocations ...
  • Magneticproperties of CuCrZrSe4 
    Belakroum, K.; Chaouche, L.; Ouili, Z.; Hemmida, M.; Nidda, H. A. K.; Loidl, A. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    We report on structural and magnetic properties of the spinel compound CuCrZrSe4. Rietveld refinement of the powder x-ray diffraction patterns reveals the normal spinel structure AB2Se4, wherethe Zr4+ and Cr3+ ions occupy ...
  • Monte Carlo simulation of primary recrystallization in an IF steel 
    Ramoul, M.; Ayad, A.; Rouag, N.; Wagner, F. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    This study presents a contribution to the modeling of primary recrystallization stage in an IF steel that is destined to the automotive industry. A two dimensional Monte Carlo technique is proposed to simulate primary ...
  • Precipitation and dissolution kinetics of the δ phase in Cu-15wt%.In and Cu-9wt%.Sb alloys. 
    Hachoufa, M.; Hamanab, D.; Benaskeura, N.; Selmia, N. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Theprecipitation and dissolution of the δ phase in the supersaturated solid solutions of both Cu-15wt%. In and Cu-9wt%.Sballoys has been studied during isothermal and anisothermal analysis using several experimental methods. ...
  • Precipitation and dissolution kinetics of the δ phase in Cu-15wt%.In and Cu-9wt%.Sb alloys. 
    Hachoufa, M.; Hamanab, D.; Benaskeura, N.; Selmia, N. (Université Frères Mentouri - Constantine 1, 2016-12-14)
    Theprecipitation and dissolution of the δ phase in the supersaturated solid solutions of both Cu-15wt%. In and Cu-9wt%.Sballoys has been studied during isothermal and anisothermal analysis using several experimental methods. ...
  • Propriétés structurales des Xérogels de TiO2 dopés auNi 
    Adnane, D.; Bensaha, R. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Les poudres de tio2 non dopées et dopées à 2% ni ont été préparés par la voie sol-gel. la caractérisation de leurs propriétés structurales ont été effectuées par différentes techniques d’investigation: l’analysethermique ...
  • Structural and optical properties of Ag/Si02 nanocomposites 
    Nouicer, Z.; Hioul, M.L. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    In this work, Ag/SiO2 composites were studied for various silver contents (2.5, 5, 7.5 and10% wt). In a first step, Ag+ ions were adsorbed on silica by ionic exchange. In a secondstep, the samples were annealedin air at ...
  • Structural and optical properties of CuO:PVC nanocomposite films 
    Troudi, B.; Halimi, O.; Djebli, A. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    Metal oxides constitut the most diverse class of materials having properties covering almost all aspects of materials science and of physics. Among these materials, copper oxide CuO is very promising. It is a p-type ...
  • Structural and optical study of co doped zno thin films 
    Khantoul, A.R.; Rahal, B.; Sebais, M.; Boudine, B.; Medjaldi, M. (Université Frères Mentouri - Constantine 1, 2016-12-15)
    ZnO is a n-type II-VI semiconductor with a wurtzite structure, a wide direct band gap of 3.37eV, and a large exciton binding energy of 60meV. It occupies a particular place among wide bandgap semiconductors (GaN, ZnS…), ...

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