The effects of acidic deposition on painted metal substrates have been investigated using a series of accelerated laboratory exposure test methods. The study examined a commercially available alkyd paint/primer system applied to a low carbon (ASTM A569 CQ) steel substrate exposed under a variety of simulated acidic conditions to determine the micro/macro effects of such exposure. Surface analytical, electrochemical and mechanical test methods were used to characterize the performance/degradation modes of the painted metal coupons. The results of these exposures identified accelerated loss in mechanical properties and discoloration of the paint in the presence of SO2.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Surfaces, Coatings and Films
- Organic Chemistry
- Materials Chemistry