| 摘要 |
PROBLEM TO BE SOLVED: To provide an effective corrosion suppression method for an iron-based member and copper-based member in a sealed cooling water system.SOLUTION: The corrosion suppression method in a sealed cooling water system includes a process in which (a) one or more kinds selected from a group consisting of erythorbic acid, ascorbic acid, and salts thereof, and (b) alkali metal carbonate and/or alkali metal hydrogen carbonate, are added to the sealed cooling water system comprising an iron-based member and a copper-based member. |
