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Journal of Marine Science and Technology

1996

Corrosion

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Full-Text Articles in Engineering

Protection Of Steel Using Aluminum Sacrificial Anodes In Artificial Seawater, Tai-Ming Tsai Jun 1996

Protection Of Steel Using Aluminum Sacrificial Anodes In Artificial Seawater, Tai-Ming Tsai

Journal of Marine Science and Technology

The performance of aluminum alloys used as sacrificial anodes for cathodic protection in seawater was investigated in this study, Results show that A1 -3.5%Zn -0.05%In sacrificial anode alloy C has the best current efficiency, most negative open circuit potential and energy characteristics among five different Al-Zn-In alloys. Polarization curve of alloy C also shows no passivation behavior in artificial seawater. The corrosion rate of mild steel in artificial seawater was determined as a function of applied cathodic potential. The cathodic protection potential determined for mild steel in seawater was -0.78 V,SCE for a corrosion rate of less than 1 mpy. …