Anodic Protection – Stainless Steels Favorite Coat
From its domestic use in washing machine drums, cutlery and sauce pans, to its commercial use for catering equipment, exhaust systems and surgical devices, stainless steel is used as the material of choose in a variety of products and processes.
While in most environments the use of stainless steel poses no concern, because of its resistance to corrosion, in certain environments, such as marine and industrial environments, its use is a challenge. Corrosion can cause a variety of problems such as perforation, loss of strength, decay and rust. There are several methods used to prevent corrosion of stainless steel in these types of environments.
Cathodic protection is a method of corrosion prevention which introduces metal anodes, such as Zinc sacrificial anodes, to the corrosive environment (Sacrificial Anodes for Heat Exchangers). These anodes are more reactive to the corrosive environment, and as a result are partially dissolved or corroded. Thereby protecting the metal from corrosion. In more highly corrosive environments where stainless steel is used, such as pumping systems, Anodic protection is the method of choice. This method of protection uses a controlled electrical current to reduce the rate of corrosion by forming a barrier between the metal and the environment.
The electrical current, which must be monitored at all times so as not to create the opposite effect, and speed up the corrosion process, can be adjusted based on the conditions to vary the thickness of the barrier. Anodic protection allows stainless steel to be used in ways and places it may not otherwise have been used. The simplicity of its application and its superior protection results are a definite advantage over other methods. Combining stainless steels natural resistance to corrosion with Anodic protection has created practically limitless use potential for the metal. To learn more about corrosion protection methods and their benefits visit http://www.cathodicme.com