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...

Susceptibility of mild steel to corrosion attack has restricted its industrial applications, despite its numerous advantageous characteristics. Comparison of the inhibitive tendency of a mixture of zinc gluconate (ZG) and ferrous gluconate (FG) on the corrosion behavior of mild steel in acid and saline media was investigated using electrochemical and weight loss techniques. The FG:ZG ratio was ...

PURPOSE The aim of this study was to investigate the cytotoxicity in human gingival fibroblast by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and corrosion behavior by potentiodynamic polarization technique of commercially pure titanium (Ti 12) and its alloy Ti-6Al-4V (Ti 31). MATERIALS AND METHODS In the present in vitro study, cytotoxicity of Ti 12 and Ti 31 in ...

Laser surface modification of Ti-6Al-4V with an existing calcium phosphate coating has been conducted to enhance the surface properties. The electrochemical and mechanical behaviors of calcium phosphate deposited on a Ti-6Al-4V surface and remelted using a Nd:YAG laser at varying laser power densities (25-50 W/mm(2)) have been studied and the results are presented. The electrochemical propertie...

Automobile production plants have advanced the utilization of stainless steel alloys for exhaust mufflers due to corrosion failures associated with their operating lifespan and conditions application. Corrosion vulnerability as received heat treated (500oC 1000oC) 439 L ferritic in 3.5 M H2SO4 electrolyte at 0% 6% NaCl concentration was evaluated potentiodynamic polarization, potentiostatic mea...

Potentiodynamic discharge measurements of hematite photoanodes, supported by micro-kinetic modeling, indicate that parallel reaction pathways prevail in water photo-oxidation. Their co-existence may lead to collective phenomena with complex dynamics.

Abstract The drastic distortion of potentiodynamic polarization curves measured at high potential scan rates prevents the extraction accurate kinetic parameters. In this work, we start by measuring AA7075 ranging from 0.167 mV·s ?1 to 100 , in an acidic 0.62 M NaH 2 PO 4 solution and a near-neutral 3.5 wt% NaCl solution. Changes are observed not only different electrolytes but also between repl...

Abstract The main characteristics of electrolytic reduction applied to indium recovery from aqueous chloride solutions were considered theoretically and examined experimentally. Also other media for comparison. Potentiodynamic examinations pointed out that electrolytes are superior sulphuric nitric acid-based ones efficient deposition. optimum conditions, allowing higher than 90% cathodic curre...