Steel Pile Anti-Corrosion Bracket Aluminum Alloy Sacrificial Anode 190kg

Steel Pile Anti-Corrosion Aluminum Alloy Sacrificial Anode is an electrochemical protection device primarily used to prevent electrochemical corrosion of metal structures such as steel pipe piles in seawater. This anode is made of high-purity aluminum alloy, featuring a low electrode potential and a high electrochemical equivalent. It provides a continuous current output in corrosive environments, thereby protecting the metal structures from corrosion?1.

Working Principle

Aluminum alloy sacrificial anodes utilize their electrochemical activity. In electrolyte environments such as seawater, soil, or other corrosive media, the potential of the aluminum alloy anode is more negative than that of the protected metal structure. In a corrosion cell, the aluminum alloy anode acts as the negative electrode and dissolves preferentially, releasing electrons. The resulting current flows to the protected metal structure, lowering its potential and placing it in a cathodic state. In this cathodic state, the corrosion reaction of the protected metal is suppressed, as the cathodic reaction primarily involves oxygen absorption or hydrogen evolution rather than metal dissolution. In this way, the aluminum alloy sacrificial anode continuously consumes itself, providing sustained cathodic protection to the metal structure and preventing corrosion?23.

Composition and Performance Characteristics

The main component of aluminum alloy sacrificial anodes is aluminum, along with other alloying elements such as zinc, indium, and tin. The addition of zinc enhances the anode's current efficiency, indium reduces the anodic polarization of the aluminum alloy, and tin helps improve the anode's performance. Additionally, aluminum alloy sacrificial anodes have a high electrical output per unit weight of anode material and excellent electrochemical performance, particularly in seawater and other media containing chloride ions. They are characterized by strong self-regulating capabilities, high corrosion resistance, and a long service life?.