Browsing by Author "Boudjema, Bouzid"
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Item Detection Of The Corrosion Of Aluminium Alloy By Optical Method(Oum-El-Bouaghi University, 2013) Daïra, Radouane; Boudjema, BouzidThe Speckle effect is a discipline with whole share. It is exploited in various scientific fields. On the application plan, it became a very powerful tool for the characterization and the non destructive testing. This technique which makes it possible to control and quantify in real time several parameters such as: the roughness of surface, the vibrations, the constraints, microphone-displacements, the microstructure of surfaces, can be applied, at the same time, with the objects transparent and diffusing, solid or liquids. The development of flexible tools of capture of images to high resolution (camera CCD) coupled to information processing systems, nowadays makes the techniques speckle particularly important and interesting for industrial control. Our work consists in controlling qualitatively and quantitatively the variation thickness extracted the surface of the Duralumin sample (Aluminium alloy) immersed in a Salt water (to 3.5%), by using a camera CCD connected to a computer equipped with a software of image processing PRO-PLUSItem Thin solid films Structural, electrical and optical properties of Fe-doped CuO deposited by spray pyrolysis technique(University of Oum El Bouaghi, 2021) Daira, Radouan; Zerouali, Madiha; Boudjema, BouzidOur work consists in depositing the copper oxide Fe doped CuO films by spray obtained from the solution of copper chloride CuCl2 and FeCl2 with a percentage of 2, 4; 6 and 8%, on glass substrates at a temperature of 3500c. The thin films obtained are characterized by X-ray diffraction, visible UV spectroscopy and the four-point technique. With X-ray diffraction, high peak intensity is obtained for the preferential orientations of (002) and (111), this intensity increases as the doping rate increases and gives us a more crystalline structure for a doping rate of 8%, also a grain size were estimated. The transmission of our films varies between 55% and 75% with a high absorption in the visible domain, the resistivity of our films increase with the increase of doping rate and the gap energy varies between 4.00 and 1.47 eV. .