Sacrificial metal refers to a type of metal that is intentionally used in a protective capacity to prevent corrosion in other metals, primarily through a process called galvanic protection or cathodic protection. This technique is commonly used in various applications, including the protection of pipelines, tanks, and marine structures. In this context, a sacrificial anode (often made of zinc, magnesium, or aluminum) is attached to a metal structure (such as steel) that needs protection from corrosion.
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