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| 几种纯金属熔体原子团簇的微观热收缩现象 | |
| 引用本文： | 董其国,王栋,程素娟,王忠华. 几种纯金属熔体原子团簇的微观热收缩现象[J]. 世界科技研究与发展, 2010, 32(1): 22-25 |
| 作者姓名： | 董其国 王栋 程素娟 王忠华 |
| 作者单位： | 1. 东营职业学院,东营,257091 2. 山东大学机械工程博士后科研流动站,济南,250061 3. 东营经济开发区,东营,257091 |
| 基金项目： | 国家自然基金项目，中国博士后科学基金面上项目，山东省博士后科研项目择优资助项目 |
| 摘 要： | 利用高温液态金属X射线衍射仪对纯金属In、Ga、Ge、Ag、Cu、Al、Sn等在液相线以上不同温度进行了实验研究,得到了其衍射强度、结构因子、双体分布函数、径向分布函数以及平均最近邻原子间距、原子配位数.实验结果表明,纯金属In、Ge、Ag、Cu、Al、Sn等在液相线以上较大温度范围内,原子团簇都存在微观热收缩现象,几种金属的微观热收缩都具有一个共同的特点--在整个测试温度区间内热收缩是不均匀的,每种金属在各温度区间内的热收缩程度以及特征不同.在此基础上进一步探讨了微观热收缩现象的机理以及熔体内发生的结构变化. |
| 关 键 词： | 团簇 微观热收缩 结构变化 X射线衍射 |
The Phenomenon of Microcosmic Thermal Contraction of Several Pure Metal Atom Clusters |
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| DONG Qiguo,WANG Dong,CHENG Sujuan,WANG Zhonghua. The Phenomenon of Microcosmic Thermal Contraction of Several Pure Metal Atom Clusters[J]. World Sci-tech R & D, 2010, 32(1): 22-25 | |
| Authors: | DONG Qiguo WANG Dong CHENG Sujuan WANG Zhonghua |
| Affiliation: | 1. Dongying Vocatinonal College, Dongying 257091 ; 2. Mechanical Engineering Post-doctoral Research Center, Shandong University,Jinan 250061 ; 3. Dongying Economic Development Zone, Dongying 257091 ) |
| Abstract: | Diffracted intensity,structure factor,two-body distribution function,radial distribution function and the average distance between current atoms was gotten by using liquid metal XD of high temperature to do experiment on pure metal,for example,In,Ga,Ge.Cu,Al,Sn,etc,in liquid phase line with different temperature.The experiment result shows that pure metal In,Ge,Ca,Al,Ag,Sn,ect,they all have a common feature-the thermal contraction in the entire test temperature is uneven and the thermal contraction levels and characteristics of every metal are different.Go further investigation for the mechanism of the phenomenon of microcosmic thermal contraction and structral changes occurred inside the metal melt on the basis of the result. |
| Keywords: | metal melt cluster microcosmic strucral change XD |
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