On the China Aluminum Network, electrolytic corrosion can occur when copper and aluminum conductors are connected in power lines. This happens because of the difference in materials between the two metals, which creates a potential difference. The voltage difference between copper and aluminum is approximately 1.7 volts. When moisture or water vapor is present, this can lead to electrochemical reactions, causing the contact surface to corrode and oxidize over time. As a result, the connection becomes poor, contact resistance increases, and the wire may overheat, posing a serious risk of electrical failure or even fire.
To prevent such issues, it's crucial to take proper anti-corrosion measures when connecting copper and aluminum wires. One common solution is to use copper-to-aluminum transition clips or joints, which act as a barrier between the two metals and reduce the chances of electrolytic corrosion. Another effective method is to tin the copper wire. This involves coating the end of the copper wire with a thin layer of tin. Although tin has lower conductivity than copper, it forms a protective oxide layer when exposed to air. This thin film prevents further oxidation of the copper and provides a stable surface for connection with the aluminum wire.
The tin oxide layer not only protects the copper but also has good electrical conductivity. It minimizes the risk of contact corrosion between copper and aluminum, ensuring a safer and more reliable connection. By implementing these techniques, engineers and electricians can significantly reduce the likelihood of electrical failures caused by electrolytic corrosion, making power systems more durable and efficient.
stainless steel square bar,Stainless Steel Square Rod,304 ss square bar
JIANGSU CHENG AO METAL TECHNOLOGY CO., LTD , https://www.chengaostainlesssteel.com