A5040851951- Aluminum Alloy Microstructure Properties
- Aluminum Alloys Composites Properties
- Anodic Oxide Films and Nanostructures
- Metal and Thin Film Mechanics
- Advanced ceramic materials synthesis
- Microstructure and mechanical properties
- Ion-surface interactions and analysis
- Corrosion Behavior and Inhibition
- Surface Treatment and Residual Stress
- Metal Forming Simulation Techniques
- Concrete Corrosion and Durability
- Hydrogen embrittlement and corrosion behaviors in metals
- Nanofabrication and Lithography Techniques
- Thermal Radiation and Cooling Technologies
- Metallic Glasses and Amorphous Alloys
- Electrodeposition and Electroless Coatings
- Electromagnetic Effects on Materials
- Material Properties and Applications
- Terahertz technology and applications
- Additive Manufacturing and 3D Printing Technologies
- Optical Coatings and Gratings
- Surface and Thin Film Phenomena
- Extraction and Separation Processes
National Research Centre
2009-2024
Ain Shams University
2016
Laboratoire de physique des Solides
2016
National Water Research Center
2014
The chemical composition of the zinc bath can strongly influence on hot-dip galvanized coatings. In this work, effects tin addition surface morphology, and corrosion resistance steel were investigated. behavior samples with Zn-Sn alloys containing different wt% Sn was analyzed by various tests such as potentiodynamic polarization Tafel lines electrochemical impedance spectroscopy (EIS) techniques. Salt spray test employed in order to study products specimens. Surface coating layers nature...
Al-11 wt.% Si-11 Fe (11.29 at.% Si-5.6 Fe) melt was rapidly solidified into ribbons and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), microhardness technique. The Rietveld analysis applied successfully to analyze microstructure phase precipitations. On the basis of aluminum peak shifts measured in XRD scans, a solid solubility extension value 1 Si <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Abstract Dissolution reaction control of aluminum in 2M KOH alkaline media was achieved through surface mechanical alloying SMA with dielectric Fiber glass ‘FG’ powder. A significant decrease corrosion rate from 0.867 for blank Al to 0.0002 mm y −1 FG powder previously etched after 15 min; attrition treatment ‘SMAT’; Formed metal matrix Al/FG composites layers on anodes have attractive electrical properties. Its analysis obtained using X-Rays Diffraction XRD, scanning electron microscopy...
HE CORROSION resistance of Aluminum (Al) in 3.5% NaCl …….was improved after surface mechanical attrition treatment (SMAT).Cyclic potentiodynamic polarization (CPP) measurements have shown hysteresis's loop area owing to localized attack.Surface examinations using scanning electron microscopy (SEM), dispersive X-ray (EDX), diffraction (XRD) and grazing induced (GIXRD) been used investigate changes composition on the at different depths.The result shows that as increasing time annealing before...
Time dependent dissociation-reactions were detected due to aniline dissociation though surface mechanical aloying ‘SMA’ on pre-mechanically activated aluminum. SMA time increase from 0 10 minutes in steps of 2.5 minute have formed Al2.85O3.45N0.55 oxynitride stable compound phase until min-SMA.Unexpectedly, the organometallic tetraaluminum sesquihydrazide C12H48Al4N12 complex was with previouly at room-temperature after min-SMAon Al substrate aniline.Considering maximum min-SMA processed...
HE CORROSION rate of Al in 3.5 % NaCl at room temperature can be reduced by subjecting the metal to sever plastic deformation (SPD) through procedure surface mechanical attrition treatment (SMAT).The corrosion resistance grain refined 3.5% SMAT for 5, 10, 15, 20 and 25 min comparison with as rolled(0) after annealing 5 hr 600 • C (blank) was investigated open circuit potential measurement.The results show that increasing time up 15min, steady state (E st. ) shifted less negative values.In...
Physical vapor deposited Al/Ru bi-layers on silicon substrates have been annealed to study reactions development.Temperature induced changes after increasing time from 10 2880 min in vacuum annealing at 500 o C were studied.Grazing incidence X-ray Diffraction indicates RuAl 2 phase formation all samples.Electron diffraction pattern of a thin foil extracted bilayers shows spots for and Al 6 Ru phases.Focused ion beam cross sections, non-uniform nm thickness reaction layer the...
Preparation of aluminum substrates for surface segregation enhancement insoluble lead deposition was achieved. Sever plastic deformation 'SPD' Al sheets done using mechanical attrition treatment 'SMAT' in air. Scanning electron microscope SEM etched cuts showed micro-cavities both on the and in-depth. Orientation effects inclusions Pb inside found at 40 50 Hz - SMAT by X-Ray diffraction energy dispersive X-Rays EDX. Concluding that frequency limits used enhanced without annealing could...
Surface mechanical alloying ‘SMA’ with Si powder on Al was used to achieve surface composite improved dielectric properties compared coarse-grained and annealed composites. Measured Dielectric constant ε', loss ε" Capacitance CμF versus increasing frequencies (105-108 Hz) exhibit a frequency dependent behavior of containing Al-Si solid solution in voltage range from 0.1 0.5 V at room temperature. Found that an increase content results ε, tan δ & C due formed solutions between after SMA...