Superheating and melting behaviors of Ag clusters with Ni coating studied by molecular dynamics and experiments
文献类型：期刊论文
| 作者 | F. T. Xu ; J. Zhong ; Z. H. Jin ; K. Lu |
| 刊名 | Science in China Series E-Technological Sciences
 |
| 出版日期 | 2001 |
| 卷号 | 44期号:4页码:432-440 |
| 关键词 | superheating and melting semi-coherent interface heterogeneous nucleation theory for melting molecular dynamics high-temperature DSC surface metals alloys model |
| ISSN号 | 1006-9321 |
| 中文摘要 | Using molecular dynamics with embedded-atom-type interatomic potentials, we simulated the melting behavior of a spherical Ag-3055 cluster coated with Ni. The semi-coherent Ag/Ni interface formed at low temperatures acts as an effective barrier against the surface melting and leads to a substantial superheating of the Ag cluster. The melting point was found to be about 100 K above the equilibrium melting point of the bulk Ag crystal (1230 K +/- 15 K) and about 290 K above that (1040 K) of the free Ag3055 cluster. A superheating of 70 K was observed in the high-temperature differential scanning calorimetry measurement for Ag particles with a mean size of 30 nm embedded in Ni matrix prepared by means of melt-spinning. Melting is initiated locally at the defective interfacial area and then propagates inwards, suggesting a heterogeneously nucleated melting event at the Ag/Ni interface. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36855]  |
| 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 | F. T. Xu,J. Zhong,Z. H. Jin,et al. Superheating and melting behaviors of Ag clusters with Ni coating studied by molecular dynamics and experiments[J]. Science in China Series E-Technological Sciences,2001,44(4):432-440. |
| APA | F. T. Xu,J. Zhong,Z. H. Jin,&K. Lu.(2001).Superheating and melting behaviors of Ag clusters with Ni coating studied by molecular dynamics and experiments.Science in China Series E-Technological Sciences,44(4),432-440. |
| MLA | F. T. Xu,et al."Superheating and melting behaviors of Ag clusters with Ni coating studied by molecular dynamics and experiments".Science in China Series E-Technological Sciences 44.4(2001):432-440. |
入库方式： OAI收割
来源：金属研究所
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