نتایج جستجو برای: potentiostatic polarization

تعداد نتایج: 66941  

Journal: :Materials research express 2021

Abstract In this study, Sn 2+ solution simulation method is used to investigate the effect of on pitting corrosion behavior tin-containing ferritic stainless steel 430LX. It found that correlation between E pit and [Sn ] opposite critical potential temperature (CPT) ]. After potentiostatic polarization at a specific potential, correlations become same. The CPT experiment after series steps prov...

2013
Fatma Mohamed Mahgoub Ahmed Mohamed Hefnawy

Anodic polarization of nickel was studied by potentiostatic technique in neutral media in presence of two macrocyclic ligands. Pit initiation was detected by measuring pitting potential, Ep and the charge transfer, Q during the anodic polarization. Initiation of pitting and Q were found to be dependent on the structure and concentrations of inhibitors. Under steady state conditions, the inhibit...

Journal: :Metals 2022

In this study, a Fe-based amorphous metallic coating (AMC) was sealed with three sealants, i.e., stearic acid, aluminum phosphate and cerium salt, respectively. Two types of electrochemical tests, namely the ex situ impedance spectroscopy test in potentiostatic polarization test, were conducted to evaluate erosion–corrosion resistance as-sprayed as-sealed AMCs. The results show that phosphate–s...

Journal: :Journal of physics 2023

Abstract Titanium Bipolar Plates (BPPs) are frequently utilized in Proton Exchange Membrane Water Electrolyzers (PEMWE) nowadays since they could endure the challenging working environment. Notably, extreme anodic potential and acidic environment of PEMWE extremely critical for BPPs’ performances. In this study, we explored corrosion behaviors conventional titanium alloys TA1 Ti-6Al-4V (TC4) at...

2016
Venith Jojee Pulikkottil S. Chidambaram P. U. Bejoy P. K. Femin Parson Paul Mohamed Rishad

OBJECTIVE (1) To evaluate the corrosion resistance of four different orthodontic archwires and to determine the effect of 0.5% NaF (simulating high fluoride-containing toothpaste of about 2250 ppm) on corrosion resistance of these archwires. (2) To assess whether surface roughness (Ra) is the primary factor influencing the corrosion resistance of these archwires. MATERIALS AND METHODS Four di...

2009
TN Narayanan MM Shaijumon PM Ajayan MR Anantharaman

Hybrid magnetic nanostructures with high coercivity have immense application potential in various fields. Nickel (Ni) electrodeposited inside Cobalt (Co) nanotubes (a new system named Ni @ Co nanorods) were fabricated using a two-step potentiostatic electrodeposition method. Ni @ Co nanorods were crystalline, and they have an average diameter of 150 nm and length of ~15 μm. The X-ray diffractio...

Journal: :Coatings 2022

In this study, the corrosion behavior of high-nitrogen austenitic stainless steel (HNS) Fe-22Cr-16Mn-0.55N before and after solution treatment (ST) in 3.5% NaCl has been investigated. The effect a temperature 1100 °C heat preservation for 30 min on resistance passive film protection HNS was studied. Open-circuit potential, potentiodynamic polarization electrochemical impedance tests were used t...

Journal: :Corrosion Science 2022

Laser Shock Peening with (LSP) and without protective coating (LPwC) was applied to sensitized AA5083 followed by electrochemical analysis. Potentiodynamic tests indicated a region of increased passivity for the LPwC samples lower corrosion current. Similarly, significantly reduced intergranular rate observed during potentiostatic polarization after treatment while LSP showed only negligible im...

Journal: :Journal of Materials Engineering and Performance 2023

Abstract The pitting corrosion susceptibility of 904L stainless steel in aerated LiBr solutions was investigated. influence various experimental variables, including electrolyte concentrations, pH, scan rate, temperatures, and constant potential has been studied using electrochemical measurements, such as cyclic potentiodynamic polarization, potentiostatic techniques, impedance spectroscopy (EI...

Journal: :journal of dentistry, tehran university of medical sciences 0
farzin heravi department of orthodontics, school of dentistry mashad university of medical sciences, mashhad, iran. mohamad hadi moayed department of materials and metallurgical engineering, ferdowsy university, mashhad, iran. nima mokhber department of orthodontics, academic center of education, culture and research (acecr), mashhad, iran.

the commonly used nickel-titanium (niti) archwires in orthodontic treatment are often exposed to fluoride-containing mouthwashes. the aim of this in-vitro study was to evaluate and compare the corrosion resistance of three commercially available niti archwires exposed to 0.05 wt% and 0.2 wt% fluoride mouthwashes.three different types of niti archwires, 0.016″ in diameter, from dentaurum, global...

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