A. Fattah-alhosseini

[ 1 ] - Corrosion Inhibition of API 5L Carbon Steel by Nettle Leaves Hydroalcoholic Extract in a 0.5 M H2SO4 Solution

In this work, electrochemical methods such as Tafel polarization and electrochemical impedance spectroscopy (EIS) were used to study the inhibition efficiency of Nettle leaves hydroalcoholic extract as a green corrosion inhibitor of API 5L carbon steel in 0.5 M H2SO4 solution. The results showed that the inhibition efficiency was increased with increasing the concentration of the extract and th...

[ 2 ] - The Effect of Chloride Ions Concentration on the Electrochemical Behavior of AISI 410 Stainless Steels in Simulated Concrete Pore Solution

The effect of chloride ions concentration on the electrochemical behavior of AISI 410 stainless steel in the simulated concrete pore (0.1 M NaOH + 0.1 M KOH) solution was investigated by various electrochemical methods such as Potentiodynamic polarization, Mott–Schottky analysis and electrochemical impedance spectroscopy (EIS). Potentiodynamic polarization curves revealed that increasing chlori...

[ 3 ] - Electrochemical Characterization of a Martensitic Stainless Steel

This paper focused on the characterization of electrochemical behavior of a martensitic stainless steel in the acidic solutions. For this purpose, electrochemical parameters were derived from potentiodynamic polarization, Mott Schottky analysis and electrochemical impedance spectroscopy (EIS) techniques. The potentiodynamic polarization results showed that corrosion current density of AISI 420 ...

[ 4 ] - The Electrochemical Behavior of AISI 321 Stainless Steel in Alkaline Media

In this paper, the electrochemical behaviour of passive films formed on AISI 321 stainless steel (AISI 321) immersed in 0.1 M NaOH + 0.1 M KOH solution was evaluated by different electrochemical techniques. For this purpose, passive films were formed at open circuit potential for 1 to 12 hours and then electrochemical measurements were done. The polarization curves suggested that AISI 321 showe...

[ 5 ] - The Effect of Solution Concentration on the Electrochemical Behaviour of AISI 321 Stainless Steel in Sulfuric Solutions

[ 6 ] - Passivity of AISI 316L stainless steel as a function of nitric concentration

In this study, electrochemical behaviour of passive films formed on AISI 316L stainless steel (AISI 316L) in three acidic solutions concentrations (0.3, 0.6, and 0.9M HNO3) under open circuit potential conditions were evaluated by potentiodynamic polarization, Mott–Schottky analysis and electrochemical impedance spectroscopy (EIS) techniques. The potentiodynamic polarization results showed that...

[ 7 ] - Evaluation of corrosion behaviour on Mn-Cr austenitic steels using 0.1 M HCl solution

One of the attractive low activation steels is the austenitic Mn-Cr steel from the view point of waste disposal because of few long-lived nuclides. In this paper, three types of Mn-Cr austenitic steels were fabricated by vacuum induction furnace. Then plates with 10 mm thickness were fabricated by hot-rolling. The physical metallurgy of these steels was studied by the corrected Schaeffler diagr...

[ 8 ] - Semiconducting properties of passive films formed on AISI 420 stainless steel in nitric acid solutions

This study focuses on the semiconductor properties of passive films formed on AISI 420 stainless steel immersed in four nitric acid solutions under open circuit potential (OCP) conditions. For this purpose, the passivation parameters and semiconductor properties of passive films were derived from potentiodynamic polarization and Mott–Schottky analysis, respectively. The OCP plots showed that th...

[ 9 ] - بررسی اثر غلظت سیلیکات‌ سدیم بر ریزساختار و رفتارخوردگی پوشش ‌های سرامیکی تشکیل‌ شده به روش اکسیداسیون الکترولیتی پلاسمایی روی آلیاژ آلومینیم5052

در این مقاله به بررسی اثر غلظت‌ سیلیکات سدیم (Na2SiO3.5H2O) بر ریزساختار و رفتار خوردگی پوشش‏های سرامیکی تشکیل ‏شده به وسیله فرآیند اکسیداسیون الکترولیتی پلاسمایی (PEO) روی زیر لایه آلیاژ آلومینیم 5052 پرداخته شد. جهت این بررسی از سه غلظت 6، 12 و 18 گرم بر لیتر سیلیکات ‏سدیم استفاده شد. از میکروسکوپ الکترونی روبشی (SEM) جهت بررسی ریزساختار سطحی و سطح مقطع پوشش‏ ها استفاده شد. مطالعه ترکیب فازی ...

[ 10 ] - تاثیر پتانسیل بر ترکیب شیمیایی و پروفیل غلظتی لایه رویین فولاد زنگ نزن 316 کم کربن در محلول اسید سولفوریک 05/0 مولار

In this study, effect of potential on composition and depth profiles of passive films formed on 316L stainless steel in 0.05 M sulfuric acid has been examined using X-ray photoelectron spectroscopy (XPS). For passive film formation within the passive region, four potentials -0.2, 0.2, 0.5, and 0.8 VSCE were chosen and films were gown at each potential for 60 min. XPS analysis results showed tha...

[ 11 ] - AN INVESTIGATION ON CORROSION BEHAVIOUR OF A356-10 VOL.% SiC COMPOSITES IN HCl SOLUTIONS

In this study, corrosion behaviour of A356-10 vol.% SiC composites casted by gravity and squeeze casting is evaluated. For this purpose, prepared samples were immersed in HCl solution for 1h at open circuit potential. Tafel polarization and electrochemical impedance spectroscopy (EIS) were carried out to study the corrosion resistance of composites. The Tafel polarization and EIS studies of ...

[ 12 ] - PHASE STABILITY AND SEMICONDUCTING BEHAVIOUR OF LOW ACTIVATION AUSTENITIC MN-CR STEELS

Four compositions of austenitic Mn-Cr steels have been developed successfully for in-vessel component materials in power plant industry. The phase stability of these Mn-Cr steels was studied by and X-ray diffraction (XRD) patterns. XRD patterns have shown that the matrix of these Mn-Cr steels is a single γ-phase structure. The potentiodynamic polarisation curves suggested that these fabricated ...

[ 13 ] - EFFECT OF IMMERSION TIME ON THE ELECTROCHEMICAL BEHAVIOUR OF AISI 321 STAINLESS STEEL IN 0.1 M H2SO4 SOLUTION

In this study, effect of immersion time on the electrochemical behaviour of AISI 321 stainless steel (AISI 321) in 0.1 M H 2SO 4 solution under open circuit potential (OCP) conditions was evaluated by potentiodynamic polarization, Mott–Schottky analysis and electrochemical impedance spectroscopy (EIS). Mott–Schottky analysis revealed that the passive films behave as n-type and p-type s...

[ 14 ] - ELECTROCHEMICAL BEHAVIOUR OF AISI 304 STAINLESS STEEL IN SULFURIC SOLUTION: EFFECTS OF ACID CONCENTRATION

The effects of H2SO4 concentration on the electrochemical behaviour of passive films formed on AISI 304 stainless steel were investigated using by potentiodynamic polarization, Mott–Schottky analysis and electrochemical impedance spectroscopy (EIS). Potentiodynamic polarization indicated that the corrosion potentials were found to shift towards negative direction with an increase in solution co...

[ 15 ] - اعمال پوشش سرامیکی به روش اکسیداسیون الکترولیتی پلاسمایی روی زیرلایه Ti-6Al-4V و بررسی رفتار خوردگی آن در محلول شبیه‌ساز بدن

در این پژوهش، تأثیر غلظت الکترولیت فسفات سدیم بر ریزساختار، الگوی پراش پرتوایکس و رفتار خوردگی آلیاژ Ti-6Al-4V پوشش داده‌شده به روش اکسیداسیون الکترولیتی پلاسمایی مورد بررسی قرارگرفته است. به‌ منظور این بررسی، الکترولیت‌های قلیایی-فسفاتی با غلظت‌های متفاوت 8، 12 و 16 گرم بر لیتر مورد استفاده قرار گرفت. ریزساختار و ترکیب شیمیایی نمونه‌های پوشش داده شده توسط میکروسکوپ الکترونی روبشی و الگوی پراش ...

[ 16 ] - تأثیر جوشکاری اصطکاکی اغتشاشی بر رفتار خوردگی آلیاژ آلومینیوم 1050در محلول 5/3 درصد وزنی کلرید سدیم

در این تحقیق، از تکنیک جوشکاری اصطکاکی اغتشاشی جهت اتصال ورق های آلیاژ آلومینیوم 1050 استفاده شده است و با تغییر پارامترهای جوشکاری شامل سرعت چرخش و سرعت پیشروی پین، رفتار خوردگی ناحیه جوش در محلول 5/3 درصد وزنی کلرید سدیم مورد بررسی قرار گرفته است. برای این منظور جوشکاری در سرعت چرخش‌های 250، 500 و 1000 دور بر دقیقه و با سرعت پیشروی‌های 14 و 56 میلیمتر در دقیقه انجام شد و از تست‌های مختلف الکت...

[ 17 ] - A Review on the Semiconducting Behavior of Passive Films Formed on Mg Alloys by Mott–Schottky Analysis

Mg alloys have a vast usage where weight reduction is really significant since they do the features really well for materials of ultra-light weight. However, Mg is inherently a reactive metal and its alloys generally possess quite weak corrosion resistance that widely restricts their technological usages, especially in some rough service conditions. Despite, many investigations on the passive a...

[ 18 ] - Influence of Electrolyte Composition and Voltage on the Microstructure and Growth Mechanism of Plasma Electrolytic Oxidation (PEO) Coatings on Tantalum: A Review

Recently, PEO process of tantalum has been developed as a method of producing corrosion-resistant, hard, wear-resistant, and biocompatible as well as having good adhesion coatings. In this review, we present the results of PEO process of tantalum in three main electrolytes. This review tries to measure the effect of electrolyte composition and voltage that were used within PEO procedure on the ...

[ 19 ] - Effect of Procedure Time on Microstructure and Corrosion Behavior of ZrTiO4/ZrO2 Nanocomposite Coatings by Plasma Electrolytic Oxidation (PEO) Applied on the Ti-6Al-4V Substrate

In this research, the effect of PEO procedure time on the distinct properties of coatings such as morphology, chemical composition, roughness and corrosion has been studied. A scanning electron microscopy equipped with an energy dispersive spectroscopy was used to study the microstructure of the coatings. In addition, x-ray diffraction (XRD) and roughness meter were used to evaluate the chemica...

[ 20 ] - Corrosion Behavior of Ti/TiN Multilayer Nanostructured Coatings Applied on AISI 316L by Arc-PVD Method in the Simulated Body Fluid

In this investigation, Ti/TiN nanolayer and TiN single layer coatings were coated on substrate of AISI 316L stainless steel by applying physical vapor deposition (PVD) using the type of cathodic arc evaporation (CAE). The evaluation of microstructure were carried out using x-ray diffraction (XRD), nanoindentation, atomic force microscopy (AFM) as well as scanning electron microscopy (SEM). Pola...

[ 21 ] - Effect of coating time on the corrosion behavior of ceramic coatings containing hydroxyapatite nanoparticles by plasma electrolytic oxidation method on AZ31 Mg alloy in simulated body fluid

In this study, the effect of coating time on the microstructure and corrosion behavior of AZ31 Mg alloy coated by plasma electrolytic oxidation (PEO) method has been investigated. For this purpose, phosphate-based electrolyte containing hydroxyapatite nanoparticles was used at different times of 5, 10 and 15 minutes. The surface properties and chemical composition of the coatings were investiga...

[ 22 ] - Effect of KOH concentration on the microstructure and electrochemical behavior of ceramic coatings formed by plasma electrolytic oxidation method on AZ31B Mg alloy

In this study, ceramic coatings were prepared on AZ31B Mg alloy by plasma electrolytic oxidation technique in electrolytes containing sodium fluoride (KF), sodium silicate (Na2SiO3.5H2O) and different potassium hydroxide (KOH) concentrations. The electrochemical behavior of AZ31B alloy and plasma electrolytic oxidation coatings was studied by potentiodynamic polarization, electrochemical impeda...