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Question:

What causes aluminium tubes to peel and blacken?

What causes aluminium tubes to peel and blacken?

Answer:

Whether the "anodic oxidation" (electrochemical oxidation), the pipe wall is not oxidized, or the internal oxidation of the pipe is not cleaned.
The phenomenon is common when the aluminum pipe is connected with other metals and has electrolyte flow. This is because the electrochemical reaction results in the formation of a galvanic cell. Aluminum is the anode, and the surface of the aluminum tube is oxidized to cause blackening and peeling
This phenomenon is common when the aluminum pipe is connected with other metals and has electrolyte liquid flow. This is because the electrochemical reaction forms the galvanic cell. Aluminum is the anode, and the surface of the aluminum tube is oxidized to cause blackening and peeling

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