The Effect of Temperature On The Corrosion  Behavior of (Al-2Cu-2Mg) Alloy In The Acidic Solution .

Talib Khulief Al-Tai, Zuheir

	The Effect of Temperature On The Corrosion Behavior of (Al-2Cu-2Mg) Alloy In The Acidic Solution .
Iraqi journal of mechanical and material engineering
Article 1, Volume 9, Issue 3, 2009, Pages 442-456
Author
Zuheir Talib Khulief Al-Tai
Abstract
This study deals with the effect of temperature on the corrosion behavior of Al-2Cu-2Mg) alloy by using simple immersion in acidic solution((3% HCl) by volume) at (30,40,50,60,70,80C°). The weight change method and microscopic examination are used in this study. Alloy without treatment, Solution heat treated at (500C°), Artificial aged at (150C°) are used to complete this study. The result of effects of temperature on the corrosion behavior of alloy in acidic solution showed a continuous increasing in corrosion rate with increase the temperature of solution. The result showed that the solution-treated alloy have the lowest weight losing compared with the untreated and artificial aged alloys where the last one show a mid stat between the other states. In the other hand the results of Arrhenius equation and the Arrhenius plots showed the rate of corrosion of the solution heat treated alloy increase ( 12 ) time when increase the temperature from (30C°) to (80C°) , the rate of corrosion of the artificial alloy increase ( 24 ) time when increase temperature in the same range above , and the untreated alloy appears high increase in corrosion rate ; the rate of corrosion increase ( 180 ) time when increase the temperature from (30C°) to (80C°) . The solution heat treated alloy submit to the Arrhenius equation while the untreated alloy and the artificial alloy not submit to the Arrhenius equation.

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