How do dissolved solids in water affect corrosion processes?

Dissolved solids in water play a significant role in corrosion processes, particularly because they can enhance the conductivity of the water. Increased conductivity facilitates the movement of ions, which is a key part of the electrochemical reactions that cause corrosion. When dissolved solids, such as salts, are present in the water, they can disrupt the effectiveness of corrosion inhibitors. Inhibitors often work by forming protective films on the surfaces of metals; however, the presence of dissolved solids can hinder this process, allowing for increased rates of corrosion.

As a result, the combination of enhanced conductivity due to the dissolved solids and their potential interference with the functioning of corrosion inhibitors directly contributes to a higher likelihood of metal degradation. This understanding is crucial in power engineering, where maintaining the integrity of systems can be directly affected by the quality of water used in processes.