Liste des documents
Dry sliding wear performance of an annealed TiNi alloy with differentnickel contents
The wear behaviour of the TiNi alloy tested at different conditions (2 and 4Nas applied loads and 40,50 an 60 wt%as nickel contents) was investigated. For this purpose, two main experimentaltechniques consisting of wear and indentation tests were used. Scanning electron microscopy (SEM)and... Voir les détails
Mots clés : TiNi alloy, factorial design, Wear Resistance, superplastic behaviour
Surface performances of Ti-6Al-4V substrates coated PVD multilayered filmsin biological environments
Multilayered and nanostructured coatings of Ti based alloys (oxides and nitrides) are elaborated and tested for increasing protective properties such as corrosion and wear resistances. A pin-on-disc tribometer was used to evaluate the wear resistance in Hank's solution against bovine bone... Voir les détails
Mots clés : PVD coatings, oxides, Nitrides, Biomaterials, tribology, corrosion
Conception d’un autopilote pour un drone léger type quadri-rotor
This dissertation is divided into two important parts: the first part is dedicated to the establishment of the dynamic quadrotor model to study its stability and control under MATLAB. The second part is reserved for the realization of an autopilot card for the quadrotor that should be compatible with... Voir les détails
Mots clés : Quadrotor, autopilot, Arduino MEGA, GPS, MPU6050, ground station, real time, MATLAB.
Etude du pouvoir inhibiteur de l’extrait de la Spergularia ruba(sabline rouge) vis-à-vis de la corrosion de l’acier X70 dans une solution acide HCl 1M
Some organic compounds are considered as effective inhibitors for the corrosion of steels in the acid medium, when they are added in low concentrations; they can reduce or stop the corrosion of the exposed metal. Their operating principle is based on the protection of the metal of its... Voir les détails
Mots clés : acid corrosion, steel, inhibition, green inhibitor, Spergularia ruba
Elaboration des nanoparticules métalliques par co-précipitation et caractérisation structurale
Nanoparticles are now part of everyday life; researchers have developed new tools with their structural and magnetic properties interesting for various fields ranging from health as well as the environment. The objective of this study is the elaboration of metallic nanoparticles in order to optimize... Voir les détails
Mots clés : metallic nanoparticles
Effet de déformation par pliage sur le comportement à la corrosion de l’acier duplex 2205
The effect of cold deforming by folding on the microstructure and corrosion behavior of austenoferritic stainless steel (duplex 2205) has been studied in this work. Duplex 2205 offers a good compromise between the toughness of austenitic steels and the mechanical and corrosion resistance of... Voir les détails
Mots clés : deformation, duplex, corrosion, Austenite, Ferrite, Resistant, Folding
Etude expérimentale des vitesses et d’atténuation d’un polymère semi cristallin PEHD par des méthodes ultrasonores
Semi-crystalline polymers are materials that permeate our daily lives, and are used in a wide range of applications, generally when viscoelasticity is required. Therefore, numerous works of research have been conducted these last years to study their elastic properties. Since then, we propose the... Voir les détails
Mots clés : Ultrasounds, Velocity, Attenuation, echoes, transmission, polymers.
Influence de l’énergie de soudage sur la microstructure et la résistance à la corrosion de l’acier inoxydable Lean duplex UNS S32101
Duplex stainless steels are widely used in industry, because their two-phase structure with equivalent fractions in austenite and ferrite gives them very interesting mechanical properties and high resistance to different types of corrosion. However, the use of these steels is limited by their... Voir les détails
Mots clés : Lean duplex stainless steel, LDX 2101, welding energy, stress corrosion cracking (SCC)
Effet des traitements thermiques sur le comportement microstructural et mécanique de l’acier inoxydable Lean duplex 2101 lors du vieillissement
As part of this project of memory we propose by this work a study on the microstructural and mechanical behavior of a stainless steel Lean Duplex LDSS 2101 during heat treatments realized in two stages: a treatment of dissolution at a temperature of 1050 ° C for one hour then water... Voir les détails
Mots clés : stainless steel Lean Duplex LDSS 2101
INFLUENCE DES TRAITEMENTS THERMIQUES SUR LES ROPRIETES DE L’ALLIAGE D’ALUMINIUM 2XXX ET LECHAMP DE DEFORMATION
The main objective of our work is to study the influence of the thermal treatment of structural hardening, we will choose Aluminum alloy (Al-Cu-Mg) of the series 2XXX, which is obtained in the form of thin plate (1.97 mm). The nuance, heat treatment history and alloy properties are unknown... Voir les détails
Mots clés : thermal treatment, Aluminum alloy (Al-Cu-Mg)