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Galvanic corrosion is an issue that occurs frequently in electrical installations where different metals are used together, especially in the case of aluminium conductors connected to copper terminals. BI METAL LUGS are the products that solve this issue by making safe and efficient electrical connections at the same time. The extra feature of the product’s fabrication and the material bonding process is what prevents corrosion as well as the reliability factor.

Galvanic corrosion is a process that starts when two metals of different composition touch each other directly and an electrolyte like water or moisture is present. Because aluminium and copper are two metals with different electrochemical potentials, the two metals generate an electric current between them. Thus, the more reactive metal, i.e. aluminium, undergoes rapid corrosion. The process continues to increase resistance at the point of contact, and to generate heat, and ultimately the joint may fail or fire may break; all these problems are averted by the BI METAL LUGS since they create a gradual transfer of electrons between the two metals.

BI METAL LUGS’ manufacturing process is where the magic of the corrosion prevention happens. These lugs have an aluminum barrel and a copper palm that are fixed together through advanced processes like friction welding. This process enables the formation of a very strong bond which is also metallurgical in nature and does not require the use of fillers or mechanical fasteners. Thus there is no direct interface of aluminum and copper being exposed which could activate the electrochemical reaction leading to galvanic corrosion.