The anode is made of Tungsten, the metal with the highest melting point, and also what lightbulb filaments are made of. The cathode also is tungsten, but has a radioactive coating to increase electron emission.
Moreover, how does a sacrificial anode work?
One type of cathodic protection system is the sacrificial anode. The anode is made from a metal alloy with a more "active" voltage (more negative electrochemical potential) than the metal of the structure it is protecting (the cathode). Sacrificial anodes generally come in three metals: magnesium, aluminum, and zinc.
What is used as a sacrificial metal?
A sacrificial metal is a metal used as a sacrificial anode in cathodic protection that corrodes to prevent a primary metal from corrosion, galvanization or rusting.
What is a sacrificial anode and how is it used?
Sacrificial Anodes are highly active metals that are used to prevent a less active material surface from corroding. Sacrificial Anodes are created from a metal alloy with a more negative electrochemical potential than the other metal it will be used to protect.