Industrial environments are rarely static, and temperature variations can significantly impact the performance of protective coatings and chemical treatments. Understanding these effects is crucial for selecting the most robust solutions. At NINGBO INNO PHARMCHEM CO.,LTD., our research into Cinnamaldehyde Thiosemicarbazone (CT) as a corrosion inhibitor for mild steel (MS) includes a detailed analysis of its behavior under varying temperature conditions.

Mild steel is a widely used material in many industrial applications, but its susceptibility to corrosion, especially in acidic environments, necessitates effective protective measures. Cinnamaldehyde Thiosemicarbazone has already demonstrated excellent protection in standard conditions. However, real-world applications often involve elevated temperatures, which can influence the adsorption and protective film formation of inhibitors. Our studies focused on evaluating CT's performance across a temperature range relevant to many industrial processes (303 K to 343 K).

The results from our gravimetric analyses provide valuable insights into this temperature dependence. While CT maintained a high level of corrosion inhibition efficiency even at higher temperatures, a slight decrease was observed as expected. For instance, in 1 M HCl, CT showed an efficiency of 95.02% at 303 K, which reduced to 86.74% at 343 K. Similarly, in 15% HCl, the efficiency dropped from 96.65% at 303 K to 92.50% at 343 K. This phenomenon is commonly associated with the nature of inhibitor adsorption. At higher temperatures, the kinetic energy of molecules increases, potentially weakening the physical adsorption forces that contribute to the inhibitor's film formation.

Despite this slight reduction, the performance of CT at elevated temperatures remains significantly superior to that of uninhibited solutions. The inhibitor continues to form a protective barrier on the mild steel surface, mitigating corrosion effectively. The activation energy (Ea) calculations further support this. We observed that the presence of CT consistently increases the activation energy required for the corrosion process, indicating a higher energy barrier for metal dissolution. This increase in Ea is generally higher at lower temperatures, which is consistent with the inhibitor's primary adsorption mechanisms being more effective under these conditions.

This detailed understanding of temperature effects allows us to provide informed recommendations for the application of Cinnamaldehyde Thiosemicarbazone. While it maintains robust protection across a range of temperatures, users can optimize its application by considering the specific thermal conditions of their environment. NINGBO INNO PHARMCHEM CO.,LTD. is committed to delivering not just effective chemicals, but also the scientific backing to ensure their optimal use in diverse industrial settings. Our ongoing research ensures that our clients always have access to the most reliable and well-understood corrosion protection solutions.