Impressed current anodes high silicon cast iron

Impressed current anodes must be corrosion resistant and otherwise durable in the environment in which they are used. They must have low consumption rates when coimected to a CP source. All materials used for impressed current anodes are cathodic (more noble) than steel. High silicon cast iron (Fe-0.95C-0.75Mn-14.5Si-4.5Cr) is used for onshore CP applications and in other locations where abrasion resistance and other mechanical damage considerations are important [1]. Graphite anodes are extensively used for onshore pipeline CP applications in which they can be buried in multiple-anode ground beds. However, graphite must be stored and handled carefully because of its brittle nature. 

Anotec Industries High silicon cast iron anodes for impressed current 5701 Production Way, Langley, V3N 4N5 British Columbia, Canada Telephone +1 (604 )514-1544 Fax +1(604) 514 1546 URL http //www.anotec.com/... 

Impressed current cathodic protection anode made of high-silicon cast iron, A new anode is on the left and a depleted anode is on the right. (Courtesy of Dean Rookes, West Coast Corrosion Prevention Ltd.)... 

In this case of a cathodic protection system, the weight and number of anodes to be used is calculated from the cycle life of the system. Prolonged life of the anode is essential to decrease maintenance cost of the impressed current cathodic protection system. Dissipation rate of the anode is a measure of the life of the anode. For high silicon, chromium bearing cast iron, the dissipation rate is 0.5 kg/A year. The weight of the anode is given by... 

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