There are a number of different approaches to limit the likelihood or impact of galvanic corrosion occuring.
Galvanic corrosion is an electrochemical process that exists when two dissimilar metals are in contact with one another via an electrolyte.
As fretting corrosion will likely result in the removal of a significant proportion of the metal surface, the impact of it cannot be removed.
Fretting is the action of two metal surfaces rubbing against each other, resulting in mechanical damage.
The consequences of crevice corrosion are generally more severe than for pitting corrosion.
The impact of pitting corrosion will depend upon the extent and depth of the corrosion pits that are formed.
Pitting corrosion is a non-reversible process i.e. once corrosion has begun you can only deal with the consequences.
Pitting corrosion generally occurs in aggressive environments, and where the protective passive film is damaged.
There are many different approaches to the measurement of corrosion, and specifically pitting corrosion.
The best defence against crevice corrosion is to limit the potential for crevices.
The main difference between pitting and crevice corrosion is the geometry of the corrosion site.
The most common form of crevices are very small gaps and contact points around fasteners, joints and washers.