Electrochemical-impedance study of the corrosion of Ni and FeAl intermetallic alloy in molten (0.62Li, 0.38K)(2)CO3 at 650 degrees C
文献类型：期刊论文
| 作者 | C. L. Zeng ; W. Wang ; W. T. Wu |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2000 |
| 卷号 | 53期号:3-4页码:289-302 |
| 关键词 | Ni FeAl molten carbonates electrochemical impedance gas electrode-reactions oxygen reduction carbonate media melts |
| ISSN号 | 0030-770X |
| 中文摘要 | The corrosion of Ni and FeAl in molten (0.62Li, 0.38K)(2)CO3 mixtures at 650 degrees C in air has been examined by the electrochemical-impedance spectroscopy (EIS) technique. The impedance spectra for Ni showed the typical characteristics of a diffusion-controlled reaction, i.e., a semicircle at the high-frequency port and a line at the low-frequency port. The corrosion of FeAl also presented the feature of a diffusion-controlled reaction during initial immersion. However, the impedance spectra were composed of two capacitance loops after some immersion time. The change of rite impedance spectra with immersion time may be ascribed to the formation of continuous external LiFeO2 and an inner Al2O3 layer. Equivalent circuits representing thefeatur es of the corrosion of Ni and FeAl were proposed to fit the impedance spectra and electrochemical parameters in the equivalent circuits were also calculated Based on the measurement of diffusion impedance, the diffusion of O-2(-) was proposed to be the predominant feature of oxygen reduction. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/37237]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. L. Zeng,W. Wang,W. T. Wu. Electrochemical-impedance study of the corrosion of Ni and FeAl intermetallic alloy in molten (0.62Li, 0.38K)(2)CO3 at 650 degrees C[J]. Oxidation of Metals,2000,53(3-4):289-302. |
| APA | C. L. Zeng,W. Wang,&W. T. Wu.(2000).Electrochemical-impedance study of the corrosion of Ni and FeAl intermetallic alloy in molten (0.62Li, 0.38K)(2)CO3 at 650 degrees C.Oxidation of Metals,53(3-4),289-302. |
| MLA | C. L. Zeng,et al."Electrochemical-impedance study of the corrosion of Ni and FeAl intermetallic alloy in molten (0.62Li, 0.38K)(2)CO3 at 650 degrees C".Oxidation of Metals 53.3-4(2000):289-302. |
入库方式： OAI收割
来源：金属研究所
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