Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni(3)Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na(2)SO(4) Deposits
文献类型：期刊论文
| 作者 | C. L. Zeng ; Z. J. Feng ; Y. Liu |
| 刊名 | Oxidation of Metals
 |
| 出版日期 | 2011 |
| 卷号 | 76期号:1-2页码:83-92 |
| 关键词 | Intermetallic alloy IC6 Na(2)SO(4) deposits Hot corrosion Electrochemical impedance spectroscopy molten-salt corrosion ni mechanism electrode coatings nickel film air |
| ISSN号 | 0030-770X |
| 中文摘要 | A two-electrode probe was used for electrochemical impedance studies of hot corrosion kinetics of molybdenum-containing Ni(3)Al-base alloy IC6 covered with a solid Na(2)SO(4) film at 750 and 800 degrees C in air. The alloy was subject to catastrophic corrosion at both temperatures, forming a thick porous oxide layer, as a result of the formation of Na(2)MoO(4)-MoO(3)-Na(2)SO(4) melt. The experimental temperature affected the formation of the melt, the ionic conduction of the corrosion layer, and thus the impedance characteristics. For the corrosion at 800 degrees C the Nyquist plots were composed of two capacitive loops at high-mid frequency and a line at low frequency indicating a diffusion-controlled reaction. At 750 degrees C, however, the plots consisted of a single capacitive loop in the initial stage, followed by the same impedance features as at 800 degrees C. Two equivalent circuits were proposed to fit the impedance spectra at the two temperatures. Based on the precise measurements of diffusion impedance, the diffusion flux of oxygen through the salt layer was calculated, and the main reduction reaction was also discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30860]  |
| 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,Z. J. Feng,Y. Liu. Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni(3)Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na(2)SO(4) Deposits[J]. Oxidation of Metals,2011,76(1-2):83-92. |
| APA | C. L. Zeng,Z. J. Feng,&Y. Liu.(2011).Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni(3)Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na(2)SO(4) Deposits.Oxidation of Metals,76(1-2),83-92. |
| MLA | C. L. Zeng,et al."Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni(3)Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na(2)SO(4) Deposits".Oxidation of Metals 76.1-2(2011):83-92. |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。