| A fundamental aspect of the growth process of alumina scale on a metal with dispersion of CeO(2) nanoparticles |
| X. Peng; Y. Guan; Z. Dong; C. Xu; F. Wang
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| 2011
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| 发表期刊 | Corrosion Science
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| ISSN | 0010-938X
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| 卷号 | 53期号:5页码:1954-1959 |
| 摘要 | The dispersion of CeO(2) nanoparticles resulted in a decrease of the oxidation rate of an ultrafine-grained Ni(2)Al(3) at 1000 degrees C. The reason is explained as follows. During oxidation many Ce ions are released from the CeO(2) nanoparticles that are enveloped by the inward growing alpha-Al(2)O(3) from the scale/metal interface due to an increased solubility. The Ce ions transport outward along grain boundaries of the scale, retarding the diffusion of Al ions for the thickening of the outer theta-Al(2)O(3). This explanation is consistent with an observation that many CeO(2) nano-precipitates appeared mainly in the near-surface zone of the formed alumina scale. (C) 2011 Elsevier Ltd. All rights reserved. |
| 部门归属 | [peng, x.; guan, y.; dong, z.; xu, c.; wang, f.] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;peng, x (reprint author), chinese acad sci, state key lab corros & protect, inst met res, 62 wencui rd, shenyang 110016, peoples r china;xpeng@imr.ac.cn
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| 关键词 | Alloy
Metal Coatings
Tem
Xrd
Sem
Oxidation
High-temperature Oxidation
Reactive Elements
Grain-boundaries
Oxide
Scales
Segregation
Alloys
Mechanism
Yttrium
Additions
Kinetics
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| URL | 查看原文
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30620
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
X. Peng,Y. Guan,Z. Dong,et al. A fundamental aspect of the growth process of alumina scale on a metal with dispersion of CeO(2) nanoparticles[J]. Corrosion Science,2011,53(5):1954-1959.
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| APA |
X. Peng,Y. Guan,Z. Dong,C. Xu,&F. Wang.(2011).A fundamental aspect of the growth process of alumina scale on a metal with dispersion of CeO(2) nanoparticles.Corrosion Science,53(5),1954-1959.
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| MLA |
X. Peng,et al."A fundamental aspect of the growth process of alumina scale on a metal with dispersion of CeO(2) nanoparticles".Corrosion Science 53.5(2011):1954-1959.
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