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

页码：5983 / 5996

页数：14

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