A review of the electrochemical and galvanic corrosion behavior of important intermetallic compounds in the context of aluminum alloys

被引：18

作者：

Ikeuba, Alexander I. ^{[1
,10
]}

Njoku, Chigoziri N. ^{[2
,10
,11
]}

Ekerenam, Okpo O. ^{[3
,10
]}

Njoku, Demian I. ^{[4
,10
,11
,12
]}

Udoh, Inime I. ^{[5
,10
]}

Daniel, Enobong F. ^{[6
,10
]}

Uzoma, Paul C. ^{[7
,10
,13
]}

Etim, Ini-Ibehe N. ^{[8
,10
,11
,14
]}

Okonkwo, Bright O. ^{[9
,10
]}

机构：

[1] Univ Calabar, Dept Pure & Appl Chem, Mat Chem Res Grp, Calabar, Nigeria

[2] Fed Univ Technol Owerri, Dept Chem Engn, Environm Composite & Optimizat Res Grp, PMB 1526, Owerri, Nigeria

[3] Fed Univ Technol, Sch Pure & Appl Sci, Dept Biochem, Ikot Abasi, Akwa Ibom, Nigeria

[4] Hong Kong Metropolitan Univ, Sch Sci & Technol, Dept Appl Sci, Hong Kong, Peoples R China

[5] Tech Univ Denmark DTU, Hempel Fdn Coatings Sci & Technol Ctr CoaST, Dept Chem & Biochem Engn, DK-2800 Lyngby, Denmark

[6] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

[7] Zhejiang Univ, ZJU UIUC Inst, Int Campus, Haining 314400, Peoples R China

[8] Akwa Ibom State Univ, Dept Marine Sci, Marine Chem & Corros Res Grp, PMB 1167, Mkpat Enin, Nigeria

[9] Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China

[10] Nigerian Alumni Assoc Inst Met Res Chinese Acad Sc, Offa, Nigeria

[11] Fed Univ Technol Owerri, Africa Ctr Excellence Future Energies & Electroche, Owerri, Nigeria

[12] Madonna Univ, Dept Ind Chem, Elele, Nigeria

[13] Fed Univ Technol Owerri, Dept Polymer & Text Engn, PMB 1526, Owerri, Nigeria

[14] Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China

来源：

RSC ADVANCES | 2024年 / 14卷 / 43期

关键词：

PROBE FORCE MICROSCOPY; 2ND PHASE PARTICLES; LOCALIZED CORROSION; S-PHASE; CONSTITUENT PARTICLES; PITTING INITIATION; NACL SOLUTIONS; HEAT-TREATMENT; AA2024-T3; CHLORIDE;

D O I：

10.1039/d4ra06070a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aluminum alloys are widely sought for different applications due to their high strength-to-weight ratio. Most often this increased strength of the alloy is achieved by specific alloying elements and heat treatment processes which give rise to second phases intermetallic particles (IMPs) also known as intermetallic compounds (IMCs). These second phases play a dominant role in the corrosion susceptibility of aluminum alloys. This review provides a systematic survey of the electrochemical, and galvanic corrosion behavior of IMPs in the context of aluminum alloys. A discussion of the electrochemical/galvanic corrosion behavior of selected/important intermetallic compounds that are commonly found in aluminum alloys such as the Q-phase (Al4Cu2Mg7Si8), pi-phase (Al8Mg3FeSi6), theta-phase (Al2Cu), S-phase (Al2CuMg), the beta-phase (Mg2Si), beta-phase (Al3Mg2), delta (Al3Li), eta-phase (MgZn2), and beta-phase (Al3Fe) is provided. In addition, the limitations in the electrochemical characterization of intermetallic compounds, the research gap, and prospects are also provided in addition to the phenomenon of galvanic polarity reversal and self-dissolution of IMPs. Schematic of the galvanic corrosion evolution on eta-phase (MgZn2), beta-phase (Al3Mg2), Q-phase (Al4Cu2Mg8Si7), and pi-phase (Al8Mg3FeSi6) coupled to aluminum at different pH values using the SVET current density map.

引用

页码：31921 / 31953

页数：33

共 168 条

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