The invention relates to aluminum and aluminum
alloy atmospheric corrosion simulation technique, in particular to a test method for simulating the
corrosion process of aluminum and aluminum
alloy in an industrially polluted atmospheric environment. In the method, aluminum or aluminum
alloy is used as a tested material;
aqueous solution containing NaHSO3 at a concentration of 0.02mol / L and NaCl at a concentration of 0 to 0.006mol / L is used as corrosive liquid; and soaking,
drying and
wetting are carried out in turn and are circulated every 10 to 20 minutes, wherein soaking is performed at 45 to 50 DEG C for 1 to 2 minutes,
drying is performed at 50 to 60 DEG C for 8 to 15 minutes,
wetting is performed at 40 to 50 DEG C for 1 to 3 minutes, and the test time is 48 to 240 hours. The method has simulating performance, accelerating performance and
repeatability, can be used in study on the
corrosion behaviors of the aluminum and aluminum alloy in the industrially polluted atmospheric environment to evaluate and predict the
atmospheric corrosion of the aluminum and aluminum alloy quickly, and can solve the problems of long test period, high cost, difficult
environmental factor control and the like of the conventional
atmospheric exposure test.