Corrosion Behavior of Fe-40at.%Al-Based Intermetallic in 0.25 M H2SO4 Solution

被引：7
|
作者：
Hernandez-Hernandez, M. [1 ]
Liu, H. B. [2 ]
Alvarez-Ramirez, J. [3 ]
Espinosa-Medina, M. A. [4 ]
Sosa, E. [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico
[2] Inst Mexicano Petr, Mexico City 07730, DF, Mexico
[3] Univ Autonoma Metropolitana Iztapalapa, Mexico City 52540, DF, Mexico
[4] Univ Michoacana, Fac Ingn Mecan, Morelia 58000, Michoacan, Mexico
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2017年 / 26卷 / 12期
关键词：
acid corrosion; EIS; Fe-Al intermetallic; CHLORIDE-CONTAINING SOLUTION; SULFURIC-ACID; IRON ALUMINIDES; ELECTROCHEMICAL CORROSION; ANODIC-DISSOLUTION; MILD-STEEL; ALLOYS; PASSIVITY; IMPEDANCE; ADDITIONS;
D O I：
10.1007/s11665-017-3036-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrochemical behavior of Fe-40at.%Al-based intermetallic microalloyed with 3 and 5 at.% Cu additions in 0.25 M H2SO4 solution over time was studied. A complementary study to characterize the surface morphology and semiquantitative chemical analysis of the corrosion products after 24 h of immersion was performed using scanning electron microscopy and x-ray energy dispersion spectrum. By means of electrochemical techniques, it was shown that Cu addition has a positive effect on corrosion resistance of Fe-40at.%Al-based intermetallic alloy. Additionally, the relatively high concentration of Cu consolidated the passive film of corrosion products and its stability.
引用
收藏
页码：5983 / 5996
页数：14
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