Semiconductor Electrochemistry and Localised Corrosion

The Electrochemistry of Corrosion

The surfaces of all metals (except for gold) in air are covered with oxide films. When such a metal is immersed in an aqueous solution, the oxide film tends to dissolve. If the solution is acidic, the oxide film may dissolve completely leaving a bare metal surface, which is said to be in the active state. In near-neutral solutions, the solubility of the oxide will be much lower than in acid sol...

Localised corrosion: general discussion.

Gerald Frankel, Geoffrey Thornton, Steven Street, Trevor Rayment, David Williams, Angus Cook, Alison Davenport, Simon Gibbon, Dirk Engelberg, Cem Örnek, Arjan Mol, Philippe Marcus, David Shoesmith, Clara Wren, Kirsi Yliniemi, Geraint Williams, Stuart Lyon, Rob Lindsay, Trevor Hughes, Johannes Lützenkirchen, Su-Ting Cheng, John Scully, Siaw Foon Lee, Roger Newman, Christopher Taylor, Ross Spring...

Fundamentals of Semiconductor Electrochemistry and Photoelectrochemistry

High Pressure Co2 Corrosion Electrochemistry and the Effect of Acetic Acid

The carbon dioxide corrosion electrochemistry of mild steel has been studied in the presence of high CO2 partial pressures and acetic acid (HAc). Potentiodynamic sweeps, linear polarization resistance (LPR) and weight loss (WL) experiments have been conducted to investigate the effects of flow velocity, CO2 partial pressure, and acetic acid concentration on the corrosion rate of mild steel. Ele...

Localised corrosion in aluminium alloy 2024-T3 using in situ TEM.

An approach to carry out chemical reactions using aggressive gases in situ in a transmission electron microscope (TEM), at ambient pressures of 1.5 bar using a windowed environmental cell, called a nanoreactor, is presented here. The nanoreactor coupled with a specially developed holder with platinum tubing permits the usage of aggressive chemicals like hydrochloric acid (HCl).