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چکیده
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In this project, atmospheric pollutant gas that has an effect on the corrosion of copper, and galvanized iron conductors has been identified by conducting climate and atmospheric studies, library studies and previous research in this field as well as analyzing corrosion on deuterated metals and new metals. In summary, the results show that SO2, NO2, humidity and chlorine in sea water (NaCl) in littoral areas of the South Pars region (Assaluyeh) have a significant effect on metal corrosion and reduce their life span. Therefore, three test boxs are designed to simulate the Asalouyeh environment by applying the average concentrations of pollutants in the past years. In order to evaluate and compare the results of the experimental boxs tested in a laboratory with real conditions, a test box was placed in the Assaluyeh area, and corrosion tests were conducted in simulated environments and Assaluyeh environment for 1 year. The gases used in the test enclosures are as the following:
A) Test box number 1 contains NO2, humidity and chlorine
B) Test box number 2 contains SO2, humidity and chlorine
C) Test box number 3 contains SO2, NO2, humidity and chlorine
D) Test box No. 4 under the actual atmospheric conditions in South Pars (Assaluyeh).
In the test boxs, the temperature control and simultaneous tests can be performed at three different temperature levels. In this project, experiments are carried out at temperatures of 40, 60 and 80 degrees Celsius. Morphology, chemical composition (surface elements), corrosion product phase and tensile strength of conductors (at 80 ° C) were compared by SEM, SEM-EDX, XRD and tensile strength tests, respectively. In addition to the tests mentioned for corrosion testing, weighing test is also used to determine the weight gain model. In the end, the corrosion rate of the metals was determined by the corrosion thickness method. Investigations showed that the simultaneous presence of NO2 and SO2 along with salt moisture (humidity plus chlorin
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