| 静高压下Cu-Si块状纳米合金的制备与表征 |
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| 引用本文： | 姚斌,苏文辉.静高压下Cu-Si块状纳米合金的制备与表征[J].高压物理学报,1995,9(2):117-123. |
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| 作者姓名： | 姚斌 苏文辉 |
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| 作者单位： | 1. 中国科学院金属研究所，快速凝固非平衡合金国家重点实验室，辽宁沈阳 110015；2. 吉林大学物理系固体物理教研室，吉林长春 130023；3. 四平师范学院固体物理研究所，吉林四平 136000 |
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| 摘 要： | 用压淬的方法，在6 GPa静高压下，以200 K/s的冷却速率冷却熔融状态的Cu70Si30合金，制备出块状Cu-Si纳米合金．X射线衍射和透射电子显微镜分析表明：该纳米合金由γ-Cu5Si和一未知相组成，未知相为简单立方晶体，晶格常数α0=0.853 5 nm，其热力学状态为亚稳态。并对静高压下块状纳米合金的形成机理进行了探讨。
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| 关 键 词： | 纳米合金 压淬 过冷度 |
| 收稿时间： | 1994-04-25; |
The Preparation and Characterization of Bulk Cu-Si Nanocrystalline Alloy under High Pressure |
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| YAO Bin,DING Bing-Zhe,LI Dong-Jian,WANG Ai-Min,LI Shu-Ling,HU Zhuang-Qi,SU Wen-Hui,GENG Yi-Zhi,HU An-Guang,XIN Zhi-Ming,et al.The Preparation and Characterization of Bulk Cu-Si Nanocrystalline Alloy under High Pressure[J].Chinese Journal of High Pressure Physics,1995,9(2):117-123. |
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| Authors: | YAO Bin DING Bing-Zhe LI Dong-Jian WANG Ai-Min LI Shu-Ling HU Zhuang-Qi SU Wen-Hui GENG Yi-Zhi HU An-Guang XIN Zhi-Ming |
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| Institution: | 1. State Key Laboratory of RSA, Institute of Metal Research, Academia Sinica, Shenyang 110015, China;2. Group of Solid State Physics, Jilin University, Changchun 130023, China;3. Institute of Solid Physics, Siping Normal College, Siping 136000, China |
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| Abstract: | The Cu-Si nanocrystalline (NC) alloy was prepared by quenching the melted Cu70Si30 alloy at cooling rate 200 K/s under a pressure of 6 GPa. The bulk Cu70Si30NC alloy consists of γ-Cu5Si and an unknown phase. The crystal structure of the unknown phase is simple cubic system and lattice constant is 0.853 5 nm. The thermo stability of the bulk Cu70Si30NC alloy was carried out and an endothermic peak was observed, enthalpy of which is 2.667 5 J/g. The formation mechanism of the bulk Cu70Si30 alloy under high pressure was discussed. |
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| Keywords: | nanocrystalline alloy pressure-quenched supercooling |
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