Electrochemical Behavior and Stability of Cu-Al-Ni Alloys in NaOH Solutions

被引：10
作者：
Badawy, Waheed A. [1 ]
El-Rabiei, Mohammed M. [2 ]
Helal, Nadia H. [2 ]
Nady, Hashem M. [2 ]
机构：
[1] Cairo Univ, Fac Sci, Dept Chem, Giza 12613, Egypt
[2] Fayoum Univ, Fac Sci, Dept Chem, Al Fayyum, Egypt
来源：
ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS | 2013年 / 227卷 / 08期
关键词：
Alloys; Corrosion; Electrochemical Techniques; Passivation; SEM; NEUTRAL CHLORIDE SOLUTIONS; COPPER-NICKEL-ALLOYS; AQUEOUS-SOLUTIONS; LOCALIZED CORROSION; ALKALINE-SOLUTIONS; PASSIVATION; ELECTRODE; KINETICS; COBALT; MEDIA;
D O I：
10.1524/zpch.2013.0347
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electrochemical behavior of copper-aluminum-nickel alloy with different Ni content in sodium hydroxide solutions was investigated. The alloys are usually used as tubes and reservoirs in basic solutions for the production of salts from marine solutions. The role of the Ni-content on the corrosion resistance of the alloy was evaluated. Different electrochemical methods were used. The increase of the nickel content in the alloy and increased immersion time in the solution improve the alloy stability due to the formation of a stable passive film. The experimental impedance data were fitted to theoretical data. The results of these experiments are discussed in reference to potential-pH (Pourbaix) diagrams. Surface morphology and barrier film constituents were examined by SEM.
引用
收藏
页码：1143 / 1158
页数：16
相关论文
共 41 条
[1]   Electrochemical behaviour of vanadium in aqueous solutions of different pH [J].
AlKharafi, FM ;
Badawy, WA .
ELECTROCHIMICA ACTA, 1997, 42 (04) :579-586
[2]  
Ashour E. A., 2009, ELECTROCHIM ACTA, V54, P4501
[3]   The role of Ni in the surface stability of Cu-Al-Ni ternary alloys in sulfate-chloride solutions [J].
Badawy, W. A. ;
El-Rabiee, M. ;
Helal, N. H. ;
Nady, H. .
ELECTROCHIMICA ACTA, 2012, 71 :50-57
[4]   Effect of nickel content on the electrochemical behavior of Cu-Al-Ni alloys in chloride free neutral solutions [J].
Badawy, W. A. ;
El-Rabiee, M. M. ;
Helal, N. H. ;
Nady, H. .
ELECTROCHIMICA ACTA, 2010, 56 (02) :913-918
[5]   Effect of Ni content on the corrosion behavior of Cu-Ni alloys in neutral chloride solutions [J].
Badawy, WA ;
Ismail, KM ;
Fathi, AM .
ELECTROCHIMICA ACTA, 2005, 50 (18) :3603-3608
[6]   Electrochemical behaviour and corrosion inhibition of Al, Al-6061 and Al-Cu in neutral aqueous solutions [J].
Badawy, WA ;
Al-Kharafi, FM ;
El-Azab, AS .
CORROSION SCIENCE, 1999, 41 (04) :709-727
[7]   Electrochemical stability of Cu-10Al-5Ni alloy in chloride-sulfate electrolytes [J].
Badawy, Waheed A. ;
El-Sherif, Rabab M. ;
Shehata, Hassan .
ELECTROCHIMICA ACTA, 2009, 54 (19) :4501-4505
[8]   POTENTIAL DEPENDENCE OF REACTION PRODUCT COMPOSITION ON COPPER-NICKEL ALLOYS [J].
BLUNDY, RG ;
PRYOR, MJ .
CORROSION SCIENCE, 1972, 12 (01) :65-&
[9]  
Bostwick T.W., 1961, CORROSION, V17, P12, DOI 10.5006/0010-9312-17.8.12
[10]   AN XPS STUDY OF THE CORROSION OF CU-10 NI-ALLOY IN UNPOLLUTED AND POLLUTED SEA-WATER - THE EFFECT OF FESO4 ADDITION [J].
CHAUHAN, PK ;
GADIYAR, HS .
CORROSION SCIENCE, 1985, 25 (01) :55-68
12345