Influence of material related parameters in Sea Water Acidified Accelerated Test, reliability analysis and electrochemical evaluation of the test for aluminum brazing sheet

The most common accelerated corrosion test used for aluminum brazing sheet is the Sea Water Acidified Accelerated Test (SWAAT). However, still some ambiguity exists, indicating that the test suffers from significant scattering of the results.Keeping the climatic parameters constant, this study elucidates how the variations of the test results are material dependent. Applying a new statistical reliability evaluation and interpretation method, it was shown that the SWAAT test is valid for product performance comparison purposes. Comparing the corrosion mechanism and morphology of attack it was proved that the SWAAT performance of the material can be reflected in potentiodynamic responses.

► The influence of processing condition on Sea Water Acidified Accelerated Test (SWAAT) for brazing sheet was studied. ► The corrosion mechanism between SWAAT and electrochemical evaluation were compared. ► The capability of electrochemical testing to predict the SWAAT performance of brazing sheet was studied. ► Applying a novel statistical analysis approach, SWAAT reliability was studied. ► The problem of test scatter has been addressed and the capability of the test for material distinction has been justified.