Sacrificial Anodes remain one of the most widely adopted solutions for corrosion prevention in submerged and buried metallic structures, valued for their proven reliability, simplicity of installation, and virtually maintenance-free operation.

Among the available materials, aluminium-based alloys have emerged as the most cost-effective choice, particularly in seawater environments and low-resistivity soils. Their high efficiency and consistent performance make them ideal for long-term corrosion protection across marine, offshore, and underground applications.

By understanding key environmental factors—such as steel surface area, water resistivity, and target service life—our corrosion engineers design galvanic protection systems precisely tailored to each asset’s unique operational conditions.

Technically, unprotected steel in seawater naturally exhibits an electrochemical potential of –0.50 to –0.60 volts relative to a silver/silver chloride reference electrode. When cathodic protection is correctly applied, this potential shifts to –0.80 volts or more negative, indicating complete corrosion suppression. This precise measurement enables clear and confident monitoring of system effectiveness.