Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni3Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na2SO4 Deposits
文献类型：期刊论文
| 作者 | Zeng, C. L.; Feng, Z. J.; Liu, Y. |
| 刊名 | OXIDATION OF METALS
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 76期号:1-2页码:83-92 |
| 关键词 | Intermetallic alloy IC6 Na2SO4 deposits Hot corrosion Electrochemical impedance spectroscopy |
| ISSN号 | 0030-770X |
| DOI | 10.1007/s11085-011-9247-5 |
| 通讯作者 | Zeng, C. L.(clzeng@imr.ac.cn) |
| 英文摘要 | A two-electrode probe was used for electrochemical impedance studies of hot corrosion kinetics of molybdenum-containing Ni3Al-base alloy IC6 covered with a solid Na2SO4 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 Na2MoO4-MoO3-Na2SO4 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. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000294691800006 |
| 出版者 | SPRINGER/PLENUM PUBLISHERS |
| 源URL | [http://ir.imr.ac.cn/handle/321006/105536]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zeng, C. L. |
| 作者单位 | Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, C. L.,Feng, Z. J.,Liu, Y.. Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni3Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na2SO4 Deposits[J]. OXIDATION OF METALS,2011,76(1-2):83-92. |
| APA | Zeng, C. L.,Feng, Z. J.,&Liu, Y..(2011).Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni3Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na2SO4 Deposits.OXIDATION OF METALS,76(1-2),83-92. |
| MLA | Zeng, C. L.,et al."Electrochemical Impedance Study of Hot Corrosion of the Mo-Rich Ni3Al-Base Alloy IC6 at 750-800 degrees C Beneath Solid Na2SO4 Deposits".OXIDATION OF METALS 76.1-2(2011):83-92. |
入库方式： OAI收割
来源：金属研究所
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