准晶和玻璃态Pd58.8Si20.6U20.6的制备及x射线和中子散射研究

R. Fuchs, S. Jost, H. Rudin, H.-J. Güntherodt, P. Fischer
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引用次数: 0

摘要

采用熔融纺丝法制备了金属玻璃Pd58.8Si20.6U20.6,并在790 ~ 805 K的氦流中退火120 ~ 200 s。在此过程中,材料转变为所谓的准晶体状态。差示扫描量热法(DSC)测量结果表明,前一种金属玻璃92%以上为准晶,不到1%为结晶,其余为非晶态。给出了弹性中子和x射线散射的数据。对计算得到的总结构因子进行了比较。与x射线的结果相反,中子的测量显示在2 Å−1的散射矢量下没有峰,这似乎表明了某种化学短程顺序。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and structural investigation by X-ray and neutron scattering of quasi-crystalline and glassy Pd58.8Si20.6U20.6

The metallic glass Pd58.8Si20.6U20.6 has been produced by melt-spinning and was annealed in a helium stream at 790–805 K for 120–200 s.

During this procedure the material transforms into the so-called quasi-crystalline state. Differential scanning calorimetry (DSC) measurements have shown that more than 92% of the former metallic glass becomes quasi-crystalline, less than 1% is crystallized and the rest remains amorphous.

The data for elastic neutron and X-ray scattering are presented. The computed total structure factors are compared. In contrast to the X-ray results, the neutron measurements show no peaks below a scattering vector of 2 Å−1, which seems to indicate some chemical short-range order.

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