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氫對Zr-Ti-Cu-Ni-Be塊體非晶合金納米晶體形成的影響
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TG139.8

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Effects of Hydrogen on the Crystallization Process of Zr41.2Ti13.8Cu12.5Ni10Be22.5 Bulk Amorphous Alloys
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    摘要:

    采用電弧熔煉及水冷銅模快速冷卻的方法，制備Zr41．2Ti13．8Cu12．5Ni10Be22．5塊體非晶合金，通過電化學方法對塊體非晶合金材料充入氫。利用差熱掃描量熱分析、Kissinger方程及高分辨電鏡，研究了氫對塊體非晶合金退火時晶化過程的影響。結果表明：氫提高玻璃轉變和晶化激活能，延遲晶核的形成及長大。此外，充氫有利于形成單獨晶核的晶粒，使納米晶粒更細小、分布均勻。

    Abstract:

    Zr41.2Ti13.8Ni10Cu12.5Be22.5 bulk amorphous alloy was prepared by arc-melting and rapid casting into a copper mould. Hydrogen charging was performed electrochemically in glycerine-phosphoric acid electrolyte. The effects of hydrogen on the crystallization process of Zr-Ti-Cu-Ni-Be bulk amorphous alloy were studied by differential scanning calorimetry (DSC), Kissinger equation and high-resolution transmission electron microscope (HRTEM). It is shown that hydrogen increases the activation energy of the glass transition and crystallization, and retards the nucleation and crystal growth. Moreover, hydrogen charging contributes to the formation of isolated crystals, resulting in the precipitation of fine and uniformly distributed nanocrystallines.

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彭德林 孫劍飛 沈軍 陳玉勇.氫對Zr-Ti-Cu-Ni-Be塊體非晶合金納米晶體形成的影響[J].稀有金屬材料與工程,2006,35(5):724~727.[Peng Delin, Sun Jianfei, Shen Jun, Chen Yuyong. Effects of Hydrogen on the Crystallization Process of Zr41.2Ti13.8Cu12.5Ni10Be22.5 Bulk Amorphous Alloys[J]. Rare Metal Materials and Engineering,2006,35(5):724~727.]
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  • 收稿日期:2005-07-04
  • 最后修改日期:2005-07-04
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