| 摘要 |
PURPOSE:To prevent the corrosion of a nonferrous metal while inhibiting the formation of iron oxide sludge when bivalent iron ions are added to seawater to prevent the corrosion of the nonferrous metal, by adding a prescribed aliphatic oxycarboxylic acid or a salt thereof. CONSTITUTION:An aliphatic <=10C oxycarboxylic acid such as citric acid, tartaric acid, malic acid or gluconic acid or the sodium, potassium or ammonium salt thereof is added to seawater contg. added bivalent iron ions. By this method, the formation of iron oxide sludge is inhibited, and the corrosion of a nonferrous metal in a system using the seawater is prevented. |
