液态In-80wt%Sn合金结构的分形分析  

Fractal analysis of the structure of liquid In-80wt% Sn alloys

作　　者：丁国华[1] 祖方遒[1] 李先芬[1] 席赟[1] 沈融融[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥230009

出　　处：《物理学报》2006年第8期4188-4192,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:50371024;50571033);教育部科学技术研究重点项目(批准号:104106)资助的课题.~~

摘　　要：在X射线衍射实验的基础上,把分形理论用于分析In80wt%Sn在300℃时的液态结构,发现液态结构是一种多度域分形结构,并提出液态结构多度域分形模型.通过分形分析,液态合金的整体结构被清晰地呈现出来.推测多度域两分形之间过渡区的大小和液态合金性质有关,过渡区的变化可能反映了液态合金性质的变化.Based on the results of the X-ray diffraction experiment, we implement the fractal concept to study the liquid structure of In-80wt% Sn at 300℃. Partially-overlapping multirange fractals in the ＇melt In-80wt% Sn are observed. According to the characteristic of the partially-overlapping multirange fractals, a model of multirange fractals in liquid structure is proposed and the simulated results agree with the experimental data, where the relative error is less than 1.5 %. From the fractal analysis, the whole structure of liquid is clearly revealed, and the range of the transition region between the fractals is speculated to be related closely with the properties of the liquid alloys, and the changes of the transition region may disclose the changes of the liquid alloy characteristics.

关 键 词：液态合金结构 分形理论 多度域分形 

分 类 号：TG115[金属学及工艺—物理冶金]