ibrabbas7

Prof. Dr. Ibrahim A. Abbas

Professor - Department of Mathematics

Faculty of science

Address: Sohag University, Egypt.

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Publications Which contain the keyword: Corrosion


Microstructural and morphological characterisation of ancient bronze coins from the archaeological site of Al-Fustat city in Egypt
This paper deals with the microstructural and morphological characterization of some ancient bronze coins excavated in the Al-Fustat archaeological site. Al-Fustat is the first capital of Egypt in the Islamic civilization. It was built by Amr Ibn Al-As in the year 641 AD on the east bank of the Nile and replacing ancient Memphis to the west. In the ancient ... Read more

Investigations methods to study corrosion of some ancient Islamic copper coins at Faculty of arts museum, Sohag university, Egypt
THROUGH THE TIME, COPPER AFFECTED BY DETERIORATION FACTORS THAT INTERACT WITH ENVIRONMENT. OXYGEN CAUSES CORROSION OF COPPER ARTIFACTS AND FORMS COPPER OXIDES, MEANWHILE IT STARTS TO MINERALIZE AND BACKS TO ITS NATURAL STRUCTURE. THIS RESEARCH STUDIED FIVE ISLAMIC COPPER COINS AT FACULTY OF ARTS MUSEUM IN SOHAG UNIVERSITY BY EXAMINATION AND ANALYTICAL METHODS TO IDENTIFY THE CORROSION NATURE AND ITS ... Read more

2018-10-04 20:04:30 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

2018-10-06 20:19:41 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

2018-10-07 06:30:53 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 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

Deteriorating effects of the metal threads on embroideries
Embroideries are considered one of the most important complex textiles which are distinguished with a raised pattern by using additional threads called extra yarns. They are generally thicker than the original warp and weft threads. Usually, they are made of metal threads. These metal threads are made of gold, silver, copper and/or their alloys as well as gilt and silvered ... Read more

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