[Technical Column] Issue 9: The Corrosion Resistance of Aluminum Sheets and a Discussion on Heat Exchangers
Corrosion prevention methods are differentiated based on the design policy of heat exchangers and the environment in which they are used!
In this column, following the 8th installment, I will discuss how to protect heat exchangers from penetration due to pitting corrosion and gas leaks for 15 years using extremely thin aluminum tubes with a thickness of 0.2mm. Metals each have their own potential, and when different metals come into contact, the metal with the lower potential tends to corrode preferentially. For example, between zinc and iron, zinc has a relatively lower potential, so it corrodes preferentially while iron does not corrode during that time. This principle is utilized in the outer walls of ships, where zinc is applied as a coating on the iron body to prevent salt damage from seawater. Similarly, galvanized steel sheets are coated with zinc to prevent the corrosion of iron, and they are widely used in buildings and structural materials. *For more details on the column, you can view it through the related links. Please feel free to contact us for more information.
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