How do corrosion rates typically respond to increasing temperature?

As temperature increases, the rate of corrosion typically increases as well. This is largely due to enhanced electrochemical reactions that occur at higher temperatures. Elevated temperatures tend to accelerate the movement of ions and the kinetics of electrochemical reactions, leading to a more aggressive corrosion process. Consequently, the passive films that may protect certain metals can break down more easily as temperature rises, further exacerbating corrosion.

In addition, as temperature increases, the solubility of gases such as oxygen in water also increases, potentially leading to more aggressive conditions for corrosion. The thermodynamic drive for reactions increases, and reaction rates can commonly double with every 10-15°C increase in temperature, illustrating the relationship between temperature and corrosion rates.

Understanding this relationship is crucial for maintaining materials and structures exposed to varying environmental conditions, as preventive measures or more resistant materials may be required in warmer environments to counteract the increased corrosion rates.