Corrosion Study of Aluminum Alloy 3303 in Water-Ethylene Glycol Mixture: Effect of Inhibitors and Thermal Shocking

被引：12
|
作者：
Asadikiya, Mohammad [1 ,2 ,3 ]
Zhong, Yu [1 ,2 ]
Ghorbani, Mohammad [3 ]
机构：
[1] Florida Int Univ, Dept Mech & Mat Engn, Miami, FL 33174 USA
[2] Florida Int Univ, Ctr Study Matter Extreme Condit CeSMEC, Miami, FL 33199 USA
[3] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF CORROSION | 2019年 / 2019卷
关键词：
PERFORMANCE; STEEL; GREEN;
D O I：
10.1155/2019/9020489
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Three types of corrosion inhibitors consisting of sodium diphosphate (Na2H2P2O7), sodium benzoate (NaC7H5O2), and sodium tetraborate (Na2B4O7) were evaluated to analyze their effectiveness to inhibit the aluminum alloy 3303 (UNS A93303) against corrosion, in water-ethylene glycol (C2H6O2) mixture. Potentiodynamic polarization tests were carried out to study the effect of each chemical. The temperature of solutions was 88 degrees C and the aluminum samples were coupled with five other metals consisting of mild steel, stainless steel, brass, copper, and solder to include the effect of galvanic corrosion. The results showed that sodium diphosphate can effectively protect the aluminum alloy 3303 in comparison with two other chemicals. The effect of thermal shocking on the corrosivity of water-ethylene glycol solution was also investigated. It was indicated that the corrosivity of water-ethylene glycol solution increases because of thermal shocking, which oxidizes the aqueous ethylene glycol. The corrosion rate of aluminum alloy 3303 coupled with the five metals in thermal shocked water-ethylene glycol solution is 142mpy, while it is 94mpy in fresh water-ethylene glycol solution.
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页数：6
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