| Understanding the electrochemical behavior of bulk-synthesized MgZn2 intermetallic compound in aqueous NaCl solutions as a function of pH | |
| Ikeuba, Alexander I.1,2,3,4; Kou, Fujun5; Duan, Haowei5; Zhang, Bo1,2; Wang, Jianqiu2; Han, En-Hou2; Ke, Wei2 | |
| Corresponding Author | Zhang, Bo(bxz011@imr.ac.cn) |
| 2019-04-01 | |
| Source Publication | JOURNAL OF SOLID STATE ELECTROCHEMISTRY
 |
| ISSN | 1432-8488 |
| Volume | 23Issue:4Pages:1165-1177 |
| Abstract | The electrochemical behavior of a bulk-synthesized MgZn2 intermetallic compound in aerated 0.1M NaCl solutions has been studied as a function of pH and applied potential using polarization techniques, electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), and focused ion beam-transmission electron microscopy (FIB-TEM). The anodic activity of MgZn2 is seen to decrease with an increase in pH value. Polarization tests reveal two limiting current densities in pH4 solution at relatively high and low potentials. At pH12, passivity is observed with a lower limiting current density compared to those observed at pH4. The corrosion film formed after potentiostatic polarization in the pH4 solution is composed of a bilayer at a less negative potential and a single layer at a more negative potential. In the case of pH12 solution, a protective compact bilayer film is formed irrespective of the potential within the passive zone. Overall, the corrosion mechanism of MgZn2 is by early dissolution of Mg leading to a Zn-enriched surface whose subsequent dissolution depends on the value of the applied potential. |
| Keyword | MgZn2 Intermetallic compound Corrosion EIS XPS FIB-TEM |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1007/s10008-019-04210-y |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51571201] |
| WOS Research Area | Electrochemistry |
| WOS Subject | Electrochemistry |
| WOS ID | WOS:000463866900011 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132943 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Bo |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 3.UCAS, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Univ Calabar, Dept Pure & Appl Chem, PMB 1115, Calabar, Nigeria 5.CRRC Qingdao Sifang CO LTD, Qingdao 266111, Peoples R China |
| Recommended Citation GB/T 7714 | Ikeuba, Alexander I.,Kou, Fujun,Duan, Haowei,et al. Understanding the electrochemical behavior of bulk-synthesized MgZn2 intermetallic compound in aqueous NaCl solutions as a function of pH[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2019,23(4):1165-1177. |
| APA | Ikeuba, Alexander I..,Kou, Fujun.,Duan, Haowei.,Zhang, Bo.,Wang, Jianqiu.,...&Ke, Wei.(2019).Understanding the electrochemical behavior of bulk-synthesized MgZn2 intermetallic compound in aqueous NaCl solutions as a function of pH.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,23(4),1165-1177. |
| MLA | Ikeuba, Alexander I.,et al."Understanding the electrochemical behavior of bulk-synthesized MgZn2 intermetallic compound in aqueous NaCl solutions as a function of pH".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 23.4(2019):1165-1177. |
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