Hot Corrosion Behavior of FeAl Intermetallic Compound Modified with Silver in Molten Salt Mixture

被引：0

作者：

Rodriguez-Diaz, R. A. ^{[1
,2
]}

Uruchurtu-chavarin, J. ^{[2
]}

Molina-Ocampo, A. ^{[2
]}

Porcayo-Calderon, J. ^{[2
]}

Mendoza, M. E. ^{[3
]}

Valdez, S. ^{[4
]}

Juarez-Islas, J. ^{[5
]}

机构：

[1] Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, DF, Mexico

[2] UAEM, CIICAP, Cuernavaca 62500, Mor, Mexico

[3] Univ Autonoma Puebla, Inst Fis, Puebla 72570, Mexico

[4] UNAM, Inst Ciencias Fis, Cuernavaca 62210, Morelos, Mexico

[5] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2013年 / 8卷 / 10期

关键词：

FeAl aluminide; intermetallic compound; hot corrosion; electrochemical technique; HIGH-TEMPERATURE CORROSION; WASTE INCINERATION; ELECTROCHEMICAL IMPEDANCE; ALLOYS; PERFORMANCE; ENVIRONMENT; ZNCL2-KCL; NI; CR; SUPERALLOY;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The hot corrosion behavior of Fe40Al intermetallic alloyed with 2.5 at. % Ag in KCl-ZnCl2 (1:1M) at 450 degrees C has been studied and assessed by means of electrochemical techniques. Techniques included potentiodynamic polarization curves, linear polarization resistance (LPR) and electrochemical impedance spectroscopy (EIS) measurements. Furthermore thermodynamic stability phase diagrams were calculated and elaborated in order to improve the understanding of the corrosion mechanism. Results have shown that addition of Ag increase the corrosion rate. Besides, corrosion potential of Fe-Al-Ag alloy resulted nobler. Ternary Fe-Al-Ag alloy exhibited a more noble corrosion potential but a bigger corrosion rate than the 304 SS specimen corroded under the same experimental conditions. Corrosion behavior is explained in terms of the stability of the corrosion products formed film.

引用

页码：11877 / 11895

页数：19

共 37 条

[1] Incineration of municipal and assimilated wastes in France: Assessment of latest energy and material recovery performances
Autret, Erwan
Berthier, Francine
Luszezanec, Audrey
Nicolas, Florence
[J]. JOURNAL OF HAZARDOUS MATERIALS, 2007, 139 (03) : 569 - 574
[2] Cottis R.T., 1999, CORROSION TESTING MA
[3] THE OXIDATION SULFIDATION BEHAVIOR OF IRON-ALLOYS CONTAINING 16-40 AT-DEGREES ALUMINUM
DEVAN, JH
TORTORELLI, PF
[J]. CORROSION SCIENCE, 1993, 35 (5-8) : 1065 - 1071
[4] Duke F. R., 1957, J ELECTROCHEM SOC, V253, P104
[5] Jones R. H., 1991, ENV EFFECTS ADV MAT
[6] High temperature corrosion mechanisms and effect of alloying elements for materials used in waste incineration environment
Kawahara, Y
[J]. CORROSION SCIENCE, 2002, 44 (02) : 223 - 245
[7] High-temperature corrosion of Fe3Al in chlorine-containing environments
Kim, I
Cho, WD
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 264 (1-2): : 269 - 278
[8] High-temperature corrosion in waste-to-energy boilers
Lee, Shang-Hsiu
Themelis, Nickolas J.
Castaidi, Marco J.
[J]. JOURNAL OF THERMAL SPRAY TECHNOLOGY, 2007, 16 (01) : 104 - 110
[9] Corrosion behaviour of various model alloys with NaCl-KCl coating
Li, YS
Spiegel, M
Shimada, S
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2005, 93 (01) : 217 - 223
[10] Models describing the degradation of FeAl and NiAl alloys induced by ZnCl2-KCl melt at 400-450 °C
Li, YS
Spiegel, M
[J]. CORROSION SCIENCE, 2004, 46 (08) : 2009 - 2023

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