Ionic Distribution During Galvanic Corrosion of a Fe-Zn Couple

Short communication Loss of cytochrome c Fe(III)/Fe(II) redox couple in ionic liquids

The electrochemical behavior of cytochrome c (cyt-c ) adsorbed to gold electrodes through mercaptoalkanoic acid/ mercaptoalcohol monolayers was investigated in the 1-butyl-3-methylimidazolium salts of bis(trifluoromethylsulfonyl)imide and hexafluorophosphate. Cyt-c does not retain its Fe(III)/Fe(II) redox activity in dry ionic liquids (ILs); however, the redox signal of the modified electrodes ...

Galvanic Corrosion Behavior of Dental Alloys

There is a wide variety of dental alloys, ranging from nearly pure gold and conventional gold-based alloys to alloys based on silver, palladium, nickel, cobalt, iron, titanium, tin, and other metals (Table 1). The types of dental alloys have increased significantly since 1980s in order to change the market price of gold and palladium. Although gold alloys are the mate‐ rials of choice in this a...

Finite Element Modeling of Galvanic Corrosion of Metals

Characterization and Control of Galvanic Corrosion During GaAs Wafer Photoresist Processing

The occurrence of galvanic corrosion on compound semiconductor substrates with exposed metal has been observed as deleterious device effects. Noble metals, e.g. gold, platinum, etc., in contact with exposed GaAs can induce undesired galvanic etching during wet process steps and result in surface irregularities that adversely affect yield. This phenomenon can occur when stripping photoresist usi...

Galvanic corrosion between orthodontic wires and brackets in fluoride mouthwashes.

The aim of this investigation was to determine the influence of fluoride in certain mouthwashes on the risk of corrosion through galvanic coupling of orthodontic wires and brackets. Two titanium alloy wires, nickel-titanium (NiTi) and copper-nickel-titanium (CuNiTi), and the three most commonly used brackets, titanium (Ti), iron-chromium-nickel (FeCrNi) and cobalt-chromium (CoCr), were tested i...