anodic protection

anodic protection

[ə′näd·ik prə′tek·shən]
(metallurgy)
Reduction of the corrosion rate in an anode by polarizing it into a potential region where the dissolution rates low.
References in periodicals archive ?
The selection of conditions for cathodic and anodic protection is simplified to draw these diagrams.
These methods typically include: Use of alloys in place of pure metal, improvement of metal plating (organic or inorganic), improvement of metal design (avoiding excessive stress, minimizing indentation), electrochemical protection (anodic protection, reduced temperature, reduced speed liquid, removing oxygen from the environment, reduced the concentration of the solution, use of corrosion inhibitors) etc.
Besides this, several operating corrosion protection mechanisms have been proposed, such as barrier protection, corrosion inhibition, and anodic protection. It has been suggested that anodic protection, a shift in corrosion potential from the active region to passive one, can explain the protective capacity of PPy toward steel [18-20].
Although there are a number of options, including changing the environment by the use of inhibitors, cathodic and anodic protection -- even using more highly alloyed specialist stainless steels -- the application of corrosion- resistant coatings is perhaps the most widely used way of protecting steel.
This can be attributed to the anodic protection of zirconyl nitrate.
Three approaches are commonly applied to reduce the rate of corrosion including cathodic protection, anodic protection (passivation), and application of barrier coatings [1].
(2010) studied electrocoagulation of biologically treated vinasse and they found out the formation of localized pits on the anode surface due to presence of chloride ions that would lead to an aggressive corrosion environment but there was no evidence of anodic protection at current densities below 5 mA [cm.sup.-2].
Where pipes are exposed to media with high sulphuric acid content, such as copper mill factories, epoxy coated pipes replace the need for installation of cathodic and anodic protection systems, traditionally installed to prevent corrosion.
"However our model showed that doing so makes no sense because this amount provides almost no anodic protection."
It was found that PANi/Ny coatings can provide an anodic protection against corrosive environments in which the metals are exposed.
The Nertec TL410 anodic protection telereader provides cathodic protection against corrosion.
NERTEC's TL410 Anodic Protection Telereader is a telemetry-monitoring device that connects to the cathodic protection system of underground pipelines and delivers its data through public network infrastructures.