Corrosion Prevention of Steel Reinforcement in 7.5% NaCl Solution using Pure Magnesium Anode

[摘要] The current work investigates the performance of pure Magnesium on corrosion prevention of steel reinforcements by way of sacrificial anoding. Two set of six steel reinforcements were tested for half-cell potential, weight loss, anode efficiency and tensile strength for each of the sacrificial anodes in a high chloride atmosphere of 7.5% NaCl in tap water. Significant reduction in weight of anode was observed during the initial 12 days. The reduction in weight of steel reinforcements tied with anodes was found to be negligible, while that of reinforcements without anodes was significantly higher. Five distinct zones of corrosion were observed during the test. The tensile strength of steel cathodically protected by Mg alloy anodes was found less affected. It could be concluded that pure Mg anode provides an effective way of corrosion mitigation.

[发布机构] Jaypee University of Engineering and Technology, Guna, India^1;Department of Applied Mechanics, Motilal Nehru National Institute of Technology Allahabad, Allahabad; 211004, India^2

[效力级别] 机械制造

[关键词] Anode efficiencies;Corrosion mitigations;Half-cell potential;NaCl solution;Pure magnesium;Sacrificial anodes;Steel reinforcements;Weight loss