𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The role of electrolyte concentration on crevice corrosion of pure nickel

✍ Scribed by M.I. Abdulsalam

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
182 KB
Volume
58
Category
Article
ISSN
0947-5117

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In this work an artificial crevice electrode was used in conjunction with a fine microprobe assembly to measure the potential inside the crevice. Using this setup crevice corrosion of commercially pure nickel was investigated in sulfuric acid with concentrations: 0.5, 1 and 2N. The outer surface of the Ni was held at a passive potential of 530 mV(SCE) while the experiment was running. The results showed a steep potential decay observed in all concentrations. For 0.5, 1 and 2N H~2~SO~4~, the total potential drop inside the crevice was: 681, 619 and 593 mV, respectively. This indicates the higher the acid concentration is the lower the potential drop will be. On the other hand, the measured current was highest (4.09 mA) for 2N and lowest (1 mA) for 0.5N. On the crevice wall a boundary was found to exist between the passive and the active regions. These findings point toward the IR voltage drop mechanism operating for this system.

πŸ“œ SIMILAR VOLUMES

Investigation of the initial stage of cr
Investigation of the initial stage of crevice corrosion on Al99.5 by electrochemical noise analysis
✍ M. Schneider; K. Galle πŸ“‚ Article πŸ“… 2007 πŸ› John Wiley and Sons 🌐 German βš– 335 KB

## Abstract The electrochemical noise analysis (ENA) is a powerful tool to investigate the initial state of local corrosion processes as pitting corrosion or crevice corrosion on aluminium alloys. The focus of this work lays on Al99.5 (AA1050). In spite of the good corrosion protection and the very

Effect of electrolyte concentration on t
Effect of electrolyte concentration on the properties of the electropolymerized polypyrrole films
✍ Yongfang Li; Jing Yang πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 144 KB πŸ‘ 2 views

The effect of electrolyte concentration on the electropolymerization of pyrrole was investigated by studies of conductivity, tensile strength, and absorption spectra, etc., of polypyrrole films prepared from electrolyte aqueous solutions. The electrolyte salts used in the studies include sodium p-to

Effects of pH and fluoride concentration
Effects of pH and fluoride concentration on the corrosion of titanium
✍ B. Lindholm-Sethson; B.I. Ardlin πŸ“‚ Article πŸ“… 2008 πŸ› John Wiley and Sons 🌐 English βš– 348 KB πŸ‘ 1 views

## Abstract The aim of this investigation was to confirm and summarize the corrosion behavior of titanium in saline solution at different pH and fluoride concentration, and to characterize the surface films and the stability of a passive and aged titanium surface using open circuit potential measur

Effect of hydrostatic pressure on the na
Effect of hydrostatic pressure on the nature of passive film of pure nickel
✍ B. Liu; T. Zhang; Y. Shao; G. Meng; F. Wang πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons 🌐 German βš– 310 KB πŸ‘ 1 views

## Abstract The effect of hydrostatic pressure on the nature of passive film of nickel in 3.5% NaCl solution was investigated by means of polarization curves, electrochemical impedance spectroscopy (EIS), and Mott–Schottky measurement. The experimental results revealed that hydrostatic pressure had

Effect of a Weak Electrolyte on the Crit
Effect of a Weak Electrolyte on the Critical Micellar Concentration of Sodium Dodecyl Sulfate
✍ Ciro Esposito; Patrizia Colicchio; Angelo Facchiano; Raffaele Ragone πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 95 KB

## NOTE Effect of a Weak Electrolyte on the Critical Micellar Concentration of Sodium Dodecyl Sulfate were always prepared using bidistilled water and used without any further treatment throughout experiments. The concentration of SDS stock solutions The critical micellar concentration of sodium