Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface
文献类型：期刊论文
| 作者 | Mei, QS; Wang, SC; Cong, HT; Jin, ZH; Lu, K |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2005-02-01 |
| 卷号 | 53期号:4页码:1059-1066 |
| 关键词 | melting superheating in situ X-ray diffraction nanoparticles pressure effect |
| ISSN号 | 1359-6454 |
| DOI | 10.1016/j.actamat.2004.11.003 |
| 通讯作者 | Lu, K() |
| 英文摘要 | Quantitative measurements were carried out on the pressure effect of superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interfaces. In situ XRD experiments revealed that encapsulated Al nanoparticles with different particle sizes can be superheated to 7-15 K beyond the bulk equilibrium melting point of Al, and that this is accompanied by a suppressed thermal expansion behavior. A value for the pressure build-up on the At core due to the constraint of the rigid Al2O3 shell of up to 0.25 GPa was derived from the temperature dependence of the lattice spacing for the superheated samples. The correlation between the measured pressure and superheating verified that the observed superheating is a pressure-induced phenomenon which follows the Clausius-Clapeyron relation. It was demonstrated that substantial superheating can be achieved by a pressure build-up even without confinement of epitaxial interfaces for a metal/ceramic system. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000226774500016 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.imr.ac.cn/handle/321006/83947]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Lu, K |
| 作者单位 | Chinese Acad Sci, Met Res Inst, SYNL, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mei, QS,Wang, SC,Cong, HT,et al. Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface[J]. ACTA MATERIALIA,2005,53(4):1059-1066. |
| APA | Mei, QS,Wang, SC,Cong, HT,Jin, ZH,&Lu, K.(2005).Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface.ACTA MATERIALIA,53(4),1059-1066. |
| MLA | Mei, QS,et al."Pressure-induced superheating of Al nanoparticles encapsulated in Al2O3 shells without epitaxial interface".ACTA MATERIALIA 53.4(2005):1059-1066. |
入库方式： OAI收割
来源：金属研究所
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