Category: ‘Cathodic Protection’
This type of anode supports other anodic reactions on their surfaces. In environments where water and chloride ions are present, chlorine evolution and oxidation of water are possible.
Platinized substrates: Platinum is t... Read More...
The following Figure illustrates the E-pH diagram for iron in the presence of water or humid environments at 25oC, which was calculated by considering all possible reactions associated with iron in wet or aqueous conditions l... Read More...
The E-pH diagram of aluminum is one of the simplest E-pH diagrams. It will be used here to demonstrate how such diagrams are constructed from basic principles. In the following discussion, only four species containing the alum... Read More...
In 1681, accelerated corrosion having been observed between iron and lead sheathing, the Navy Board decided locally to remove the lead sheathing from ships' hulls to prevent the rapid corrosion of the rudder irons and bolt hea... Read More...
Impressed current cathodic protection is applied by coupling the metal to be protected to the negative pole of a direct current (DC) source (schematic), while the positive pole is coupled to an auxiliary anode. Since the drivi... Read More...
The first application of cathodic protection (CP) can be traced back to 1824, when Sir Humphry Davy, in a project financed by the British Navy, succeeded in protecting copper sheathing against corrosion from seawater by the ... Read More...
The cost of cathodic protection of metallic structures subject to corrosion can be divided into the cost of materials and the cost of installation and operation. Industry data have provided estimates for the 1998 sales of various... Read More...
CP-Cathodic protection was born in 1824, when Sir Humphry Davy made a presentation to the Royal Society of London: "The rapid decay of the copper sheeting on His Majesty's ships of war, and the uncertainty of the time of its d... Read More...