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首页> 外文期刊>Philosophical magazine, B. Physics of condensed matter, electronic, optical, and magnetic properties >Phase separation in amorphous Zr-Co and Zr-Fe alloys
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Phase separation in amorphous Zr-Co and Zr-Fe alloys

机译：非晶Zr-Co和Zr-Fe合金中的相分离

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Amorphous Zr-Co and Zr-Fe alloys were prepared by melt spinning and co-sputtering and investigated by electromotive force measurements. The experiments show constant chemical potentials in different concentration ranges, which are indicative of the presence of two amorphous phases in both alloy systems. The thermodynamic data are analysed using the calculation-of-phase-diagrams method. In amorphous Zr-Co a two-phase region is found for compositions with between 63 and 77 at.%Co. In Zr-Fe the metastable equilibrium between two amorphous phases extends from 37 to 62 at.% Fe. The calculation of the enthalpies of mixing and the Gibbs energies shows that, in both systems, one amorphous phase has its maximum stability at about equiatomic composition, whereas a second minimum of the Gibbs energy is located at Zr-poor concentrations. The different two-phase range of amorphous Zr-Co compared with that of Zr-Fe is explained by the relative stabilities of the chemical order in the amorphous phases, which differ in these alloy systems.
机译：通过熔融纺丝和共溅射制备非晶态Zr-Co和Zr-Fe合金，并通过电动势测量进行研究。实验显示出在不同浓度范围内的恒定化学势，这表明两种合金体系中都存在两个非晶相。使用相图计算法分析热力学数据。在无定形的Zr-Co中，发现具有介于63和77at。％Co之间的组成的两相区域。在Zr-Fe中，两个非晶相之间的亚稳态平衡从37％扩展到62 at。％Fe。混合焓和吉布斯能量的计算表明，在两个系统中，一个非晶相在大约等原子组成下具有最大的稳定性，而吉布斯能量的第二个最小值位于低Zr浓度。与Zr-Fe相比，非晶Zr-Co的两相范围有所不同，这是由非晶相中化学顺序的相对稳定性所解释的，在这些合金体系中这是不同的。

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