Structural behavior of CuxZr100-x metallic glass (x=35-70)
Structural behavior of CuxZr100-x metallic glass (x=35-70)
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DOI：
10.1016/j.jnoncrysol.2007.08.035
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发表时间：
2008-02-01
影响因子：
3.5
通讯作者：
Eckert, J.
中科院分区：
文献类型：
--
作者：
Mattern, N.;Schoeps, A.;Eckert, J.
研究了急冷非晶Cu_xZr_（100-x）合金在35 ~ 70 at.%范围内的结构行为Cu含量合金的高能X射线衍射谱、原子对关联函数、质量密度和热稳定性均随成分单调变化。偏对相关函数的确定，假设它们保持不变，在不同的非晶CuxZr 100-x合金，只有重量分数成为改变与组合物的变化。实验结果可以用Cu和Zr原子在整个成分范围内的固溶置换来描述。没有迹象表明，观察既不存在一个特殊的原子排列在一个特定的化学组成，也不存在相分离的二元Cu-Zr系统的玻璃态。(C)2007 Elsevier B. V.保留所有权利。
The structural behavior of rapidly quenched amorphous CuxZr100-x alloys was investigated in a wide composition range between 35 and 70 at.% Cu content. High-energy X-ray diffraction patterns, atomic pair correlation functions, mass density and the thermal stability behavior of the alloys all exhibit monotonic changes with composition. Partial pair correlation functions were determined assuming that they remain unchanged in the different amorphous CuxZr100-x alloys and only the weight fractions become altered with changes in composition. The experimental results can be well described by a solid solution-like replacement of Cu and Zr atoms in the whole composition ranee. No indications are observed neither for the existence of a special atomic arrangement at a particular chemical composition nor for the presence of phase separation in the glassy state of the binary Cu-Zr system. (C) 2007 Elsevier B.V. All rights reserved.