Block Aluminum Alloy Sacrificial Anode - Block Aluminum Alloy Sacrificial Anode Price

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Block Aluminum Alloy Sacrificial Anode - Block Aluminum Alloy Sacrificial Anode Price

Main Performance and Characteristics of Block Aluminum Alloy Sacrificial Anode

1. Electrochemical Performance: Aluminum alloy sacrificial anodes exhibit high electrochemical performance, with a large amount of electricity generated per unit weight of anode material, approximately three times that of zinc anodes and twice that of magnesium anodes. They perform well in seawater and other media containing chloride ions, with strong self-regulating capability for current output‌1.
2. Electrode Potential: The electrode potential of aluminum alloy sacrificial anodes typically ranges between -0.75 and -1.30 V (SHE)‌3.
3. Current Efficiency: Current efficiency ranges between 95% (for alloys containing Hg) and 70%–80% (for alloys containing Cd, In, Sn)‌3.

Application Scope and Limitations

1. Suitable Environments: Aluminum alloy sacrificial anodes are suitable for the cathodic protection of metals against corrosion in seawater environments, including ships, mechanical equipment, marine engineering, port facilities, as well as pipelines and cables in seabed mud‌34.
2. Usage Limitations: They are not recommended for use in soil environments because the corrosion products formed on their surface are difficult to migrate promptly in soil, easily forming a dense product film that envelops the anode, hindering current generation and potentially leading to cathodic protection failure‌3.

Manufacturing Process and Quality Inspection

The production process of aluminum alloy sacrificial anodes includes raw material preparation, processing and shaping, quality inspection, and other steps. Multiple spectral analyses and electrochemical tests are conducted during production to ensure product quality‌4.

In summary, aluminum alloy sacrificial anodes excel in protecting metal structures in seawater environments due to their excellent electrochemical performance and broad application scope, but attention must be paid to their environmental limitations.