hossnia_saber

Hossnia Saber Mohran

Professor - Professor

Faculty of science

Address: Chemistry Department Faculty of Science Sohag University

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Role of Ni content in improvement of corrosion resistance of Zn–Ni alloy in 3.5% NaCl solution. Part I: Polarization and impedance studies

2015 | Keywords Zn–Ni alloy, Ni content, corrosion resistance,
Role of Ni content in improvement of corrosion resistance of Zn–Ni alloy in 3.5% NaCl solution. Part I: Polarization and impedance studies
Zn plays an important role in the protection of iron and steel from corrosion in sea water, and the alloying of Zn and Ni can improve its corrosion resistance. The corrosion behavior of Zn–Ni alloys in synthetic sea water (3.5% NaCl, mass fraction) was studied using Tafel plot and electrochemical impedance spectroscopy (EIS) techniques. The corrosion resistance of the investigated ... Read more

Effect of indium alloying with lead together with the addition of phosphoric acid in electrolyte to improve lead-acid battery performance

2015 | Keywords Lead/acid battery, Phosphoric acid, Corrosion, Indium content, Lead-indium alloy,
Effect of indium alloying with lead together with the addition of phosphoric acid in electrolyte to improve lead-acid battery performance
The electrochemical and corrosion behavior of Pb and Pb-In alloys in both phosphoric and sulfuric acid solutions containing various concentrations of phosphoric acid (0.05 to 0.20 M) at different temperatures was studied. Tafel plot and electrochemical impedance spectroscopy (EIS) techniques were used to obtain the experimental data, and the corrosion products formed on the surface were characterized by scanning electron ... Read more

Effect of nickel content on the anodic dissolution and passivation of zinc–nickel alloys in alkaline solutions by potentiodynamic and potentiostatic techniques

2015 | Keywords Metal alloys, anodic dissolution, passivation, Electron microscopy, X-ray diffraction,
Effect of nickel content on the anodic dissolution and passivation of zinc–nickel alloys in alkaline solutions by potentiodynamic and potentiostatic techniques
The effect of systematic increase of Ni on the anodic dissolution and passivation of Zn–Ni alloys in var-ious concentrations of KOH solution (0.1–1 M) was investigated. The anodic dissolution and passivation behaviourfor each pure Zn and Ni in the same studied solutions was also investigated, and the obtained data were compared.Potentiodynamic and potentiostatic methods were used, and the corrosion layer ... Read more

Effect of Indium Alloying with Lead on the Mechanical Properties and Corrosion Resistance of Lead-Indium Alloys in Sulfuric Acid Solution

2015 | Keywords corrosion resistance, , Corrosion Rate, Electrochemical Impedance Spec, Corrosion Potential, Corrosion Current Density,
Effect of Indium Alloying with Lead on the Mechanical Properties and Corrosion Resistance of Lead-Indium Alloys in Sulfuric Acid Solution
Effect of indium alloying in various concentrations with lead on both microhardness and crystallite structure of lead-indium alloy was investigated. The corrosion behavior of leadindium alloys in 4 M H2SO4 acid solution was investigated by Tafel plot and electrochemical impedance spectroscopy (EIS) methods. The results of both Tafel plot extrapolation and EIS measurements exhibited the same trend. Generally, the corrosion ... Read more

Role of Indium Alloying with Lead as a Means to Reduce the Passivation Phenomena in Lead/Acid Batteries

2014 | Keywords Lead/Acid Batteries, Passivation Phenomena, Lead-indium alloy,
Role of Indium Alloying with Lead as a Means to Reduce the Passivation Phenomena in Lead/Acid Batteries
The influence of indium content on the anodic behaviour of Pb-In alloys in 4 M H2SO4 solution is investigated by potentiodynamic, potentiostatic, chronopotentiometric, and cyclic voltammetric techniques. The composition and microstructure of the corrosion layer on Pb-In alloys are characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy analysis (EDX), and scanning electron microscopy (SEM). The potentiodynamic and chronopotentiometric curves show ... Read more

Corrosion Study of Zinc, Nickel, and Zinc-Nickel Alloys in Alkaline Solutions by Tafel Plot and Impedance Techniques

2012 | Keywords Tafl Plot, Zinc-Nickle Alloy, Corrosion,
Corrosion Study of Zinc, Nickel, and Zinc-Nickel Alloys in Alkaline Solutions by Tafel Plot and Impedance Techniques
The article describes the use of Tafel plot and electrochemical impedance spectroscopy (EIS) techniques, in order to study the corrosion process of pure zinc, nickel, and synthetic Zn-Ni alloys in various concentrations (0.25 to 1 M) of KOH solution in a temperature range 298 K to 328 K (25 [1]C to 55[1]C). The corrosion rate increases with increasing both concentration ... Read more

Effect of some nitrogen-heterocyclic compounds on corrosion of tin, indium, and their alloys in HClO4

2012 | Keywords Electrochemistry, Adenine, Adenosine, Alloys, Polarization curves,
Effect of some nitrogen-heterocyclic compounds on corrosion of tin, indium, and their alloys in HClO4
The effect of adenine, adenosine, and 2,4,6-tris(2-pyridyl)-1,3,5-triazine (TPTZ) on the electrochemical and corrosion behavior of tin, indium, and tin-indium alloys in 0.5 M HClO4 solution at different temperatures was studied. The inhibition efficiency increases with an increase in the concentration of adenine and adenosine in the case of tin and indium. However, the effect of two mentioned compounds on the ... Read more

The inhibition effect of 2,4,6-tris (2-pyridyl)-1,3,5-triazine on corrosion of tin, indium and tin–indium alloys in hydrochloric acid solution

2010 | Keywords TPTZ, Corrosion, inhibition, Tin–indium alloy, Frumkin isotherm,
The inhibition effect of 2,4,6-tris (2-pyridyl)-1,3,5-triazine on corrosion of tin, indium and tin–indium alloys in hydrochloric acid solution
The influence of 2,4,6-tris (2-pyridyl)-1,3,5-triazine (TPTZ) on the corrosion of tin, indium and tin–indium alloys in 0.5 M HCl solution at different temperatures was studied. Potentiodynamic cathodic polarization and extrapolation of cathodic and anodic Tafel lines techniques were used to obtained experimental data. In the case of tin, the percent inhibition efficiency (IE%) increases as both concentration of TPTZ and ... Read more

Effect of minor nickel alloying with zinc on the electrochemical and corrosion behavior of zinc in alkaline solution

2010 | Keywords Electrochemical behavior, Minor Ni alloying, Corrosion, Zinc,
Effect of minor nickel alloying with zinc on the electrochemical and corrosion behavior of zinc in alkaline solution
The electrochemical and corrosion behavior of pure zinc and Zn–0.5Ni alloy in strong alkaline solution (7 M KOH) was investigated by Tafel plot, potentiodynamic, potentiostatic and electrochemical impedance spectroscopy (EIS) methods, and characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Measurements were conducted under different experimental conditions. The results of both Tafel plot extrapolation and the electrochemical impedance ... Read more

An Electrochemical Investigation of the Redox Properties of Murexide in Aqueous and Non-Aqueous Media

2009 | Keywords Murexide-cyclic voltammetry, impedance spectroscopy (EIS), redox,
An Electrochemical Investigation of the Redox Properties of Murexide in Aqueous and Non-Aqueous Media
Knowledge of solvent effects on the redox properties of Murexide (Mu) is important for understanding its role as an electron acceptor in analytical and inorganic chemistry. In the present study, an investigation of the electrochemical behavior of the compound by both Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) in both aqueous and non-aqueous solutions was undertaken. It is suggested ... Read more