Influence of temperature on the corrosion testing of anodized aerospace alloys

Corrosion testing of anodized aerospace alloys is often performed by immersion and salt spray tests, according to specific international standards. The two tests differ not only in the physical exposure conditions but also in the standard testing temperature. In this work, the individual effects of temperature and exposure type on the protective performance of different anodic oxides are considered. It is found that the testing temperature has a significant effect on the overall corrosion behavior of the anodized alloy during the immersion test, but it has a reduced effect during the salt spray test. •The effect of temperature on the corrosion test of anodized AA2024T3 was investigated.•The temperature has a significant effect on corrosion behavior during immersion testing.•The temperature has little influence on the corrosion behavior during salt spray testing.•The performance of different anodic oxides depends both on test type and on test temperature.