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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Direct imaging of phase separation in Pd _(41.25)Ni _(41.25)P _(17.5) bulk metallic glasses
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Direct imaging of phase separation in Pd _(41.25)Ni _(41.25)P _(17.5) bulk metallic glasses

机译：Pd _（41.25）Ni _（41.25）P _（17.5）大块金属玻璃中相分离的直接成像

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摘要

The alloy system, Pd _(41.25)Ni _(41.25)P _(17.5), has a negative heat of mixing among its constituent elements. By using high resolution transmission electron microscopy, high angle annular dark field in scanning transmission mode, and energy dispersive X-ray spectroscopy, it was found that phase separation occurs in Pd _(41.25)Ni _(41.25)P _(17.5) glassy alloys. For a clear exhibition of the amorphous phase separation reaction, it is desirable to introduce intermediate thermal annealing before an undercooled Pd _(41.25)Ni _(41.2)5P _(17.5) melt is cooled down to become a solid amorphous specimen. The results suggest that there may be unique short range orders in amorphous/liquid Pd _(41.25)Ni _(41.25)P _(17.5), which are responsible for the phase separation.
机译：合金体系Pd _（41.25）Ni _（41.25）P _（17.5）在其构成元素之间具有负混合热。通过使用高分辨率透射电子显微镜，扫描透射模式下的高角度环形暗场和能量色散X射线光谱法，发现在玻璃态的Pd _（41.25）Ni _（41.25）P _（17.5）中发生了相分离。合金。为了清楚地显示出非晶相分离反应，希望在将过冷的Pd _（41.25）Ni _（41.2）5P _（17.5）熔体冷却成固体非晶试样之前引入中间热退火。结果表明，非晶/液体Pd _（41.25）Ni _（41.25）P _（17.5）中可能存在独特的短程有序，这是造成相分离的原因。

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