Organic Corrosion Inhibitors for Interim Corrosion Protection

摘要

The prevention of uniform corrosion on metal parts subsequent to surface treatment operations is becoming a key problem, after increasingly complex legal requirements and ecotox issues have caused the ban or the de-facto abandonment of various well-tried corrosion inhibiting actives. In this presentation, the potential of organic corrosion inhibitors for interim corrosion protection is demonstrated. After a brief survey on structure and function of organic corrosion inhibitors, examples dealing with uniform corrosion as it occurs during manufacturing, storage, or transportation of metal parts are discussed. Immersion tests, weathering, electrochemical measurements, and microscopy are used to monitor the effect of different classes of organic inhibitors and their synergy with other additives.