Wednesday, October 10, 2012

Magnesium Anodes, Magnesium Anodes for Sale


Company: HWASEUNG R&A CO., Ltd.
Country:  South Korea
Address: 147-1,Gyo-dong, Yangsan, Gyeongsangnam-Do, Korea (South) 626-210
Contact: Myeong-yeon Kang
Tel: +82-55-370-3331

Magnoa Magnesium Anodes

Magnesium Anodes, Magnesium Anodes for Sale

Magnesium Anodes, Magnesium Anodes for Sale


Magnesium Anodes
In cathodic protection, the most widely used sacrificial anodes are magnesium anodes. When high potential magnesium anodes are required for high current applications. Magnesium has an equilibrium potential of -2.61V vs., SCE and therefore theoretically can provide a very large driving voltage. However, practical measurements indicate relatively more noble corrosion potentials probably due to the electrochemical inefficiency of the metal as a sacrificial anode. The low efficiency (50~60%) has been attributed to hydrogen evolution at local cathodes and complex surface chemistry at the node surface.

The theoretical current capacity for a magnesium anode is approximately 2200 Ah kg-1 whereas actual measured valves are in the range of 1200 Ah kg-1.

Because of their driving voltage are principally used in soils, water tanks, and similar high resistance media. In high conductivity environments, such as seawater, magnesium anodes are generally not recommended because of risk of overprotection and high consumption rate. 

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