Abstract: The corrosion of aluminum in wet/dry enviroment containing SO2 was studied by using IR and SEM. The compared test without SO2 was also carried out. The test went on for 5 cycles (120h).The corrosive effect of SO2 became strong during the test.The corrosion of aluminum followed a function of positive exponent. It shows that the corrosion rate of aluminum increases with time. The results also indicate that, a protect film of Al2O3 can not form on aluminum in wet environment containing SO2. The main corrosion product in the test environment is Al2(SO4)3·18H2O. The aluminum was corroded lightly in the compared test environment, and the mass increase was only 0.043g/m2. The corrosion mass loss was smaller obviously than that in accelerate corrosive environment containing SO2. The surface of specimens was still shiny compared with that with SO2.
Corrosion of aluminum in wet/dry environment containing SO2
Abstract:
The corrosion of aluminum in wet/dry enviroment containing SO 2 was studied by using IR and SEM. The compared test without SO 2 was also carried out. The test went on for 5 cycles (120 h) .The corrosive effect of SO 2 became strong during the test.The corrosion of aluminum followed a function of positive exponent. It shows that the corrosion rate of aluminum increases with time. The results also indicate that, a protect film of Al 2O 3 can not form on aluminum in wet environment containing SO 2. The main corrosion product in the test environment is Al 2 (SO 4) 3·18H 2O. The aluminum was corroded lightly in the compared test environment, and the mass increase was only 0.043 g/m 2. The corrosion mass loss was smaller obviously than that in accelerate corrosive environment containing SO 2. The surface of specimens was still shiny compared with that with SO 2.