The evaluation of Aluminum Alloy Corrosion in Gabraun and Desalination Waters
Keywords:
Aluminum alloy, Gabraun water, Desalination water, weight loss method, corrosion rate, Pourbaix diagram, LSIAbstract
The aim of this study was to investigate the effect of Gabraun and Desalination waters on corrosion of aluminum alloy. The corrosion tests were carried out at room temperature. The test solutions (electrolyte) used were Gabraun and Desalination water samples. Weight loss method was used. From the results obtained, it was found that the weights of all the specimens after the tests were decreased. Also it was found that that the average corrosion rate of Aluminum immersed in Gabraun water is little bit greater than the average corrosion rate of Aluminum immersed in Desalination water. The results showed that the color of the specimens surfaces immersed in Gabraun water was changed to white- gray color and the color of the specimens surfaces immersed in Desalination water was change to black-gray color. During the corrosion tests period, the Gabraun and Desalination water in the beakers was decreased about 50mL/week. The presence of some alloying elements like iron (Fe), copper (Cu) and Zinc (Zn) are susceptible to the corrosion processes. The Pourbaix diagrams showed Gabraun water and Desalination water are a corrosive mediums. The Langelier Saturation Index (LSI) showed that the Gabraun and Desalination water samples are not corrosive medium
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