Reversible atomic processes as basic mechanisms of the glass transition

Feng Ye; Wolfgang Sprengel; Rainer K. Wunderlich; Hans-Joerg Fecht; Hans-Eckhardt Schaefer

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Reversible atomic processes as basic mechanisms of the glass transition

机译：可逆原子过程是玻璃化转变的基本机制

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摘要

Reversible formation and disappearance of vacant spaces (vacancy-type defects) in bulk Zr_(57)Cu_(15.4)Ni_(12.6)Nb_5Al_(10) glass are directly evidenced by high-resolution, time-differential dilatometry studies. The vacancy kinetics are strongly temperature-dependent, with an effective migration enthalpy of H_V~M = 3.34 eV. This may explain the strong temperature dependence of glass properties such as viscosity. The results presented here are of general importance for understanding amorphous condensed matter and biomaterialsrnand for the technical development of amorphous steels.

机译：高分辨率ZD_（57）Cu_（15.4）Ni_（12.6）Nb_5Al_（10）玻璃中空位（空位类型缺陷）的可逆形成和消失可通过高分辨率，时差扩容研究直接证明。空位动力学与温度密切相关，有效迁移焓为H_V〜M = 3.34 eV。这可以解释玻璃性质例如粘度的强烈的温度依赖性。本文介绍的结果对于理解非晶态冷凝物和生物材料以及非晶态钢的技术发展具有普遍意义。

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《Proceedings of the National Academy of Sciences of the United States of America》 |2007年第32期|12962-12965|共4页
作者
Feng Ye; Wolfgang Sprengel; Rainer K. Wunderlich; Hans-Joerg Fecht; Hans-Eckhardt Schaefer;
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作者单位

Institut fuer Theoretische und Angewandte Physik, Universitaet Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类自然科学总论;
关键词
bulk metallic glass; dilatometry; positron annihilation;

机译：大块金属玻璃;膨胀计正电子an灭;

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机译：简单单原子玻璃中玻璃到液体转变的原子机理
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机译：用原子力显微镜检查聚合物/聚合物和聚合物/玻璃界面变形和断裂机制
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6. From the Cover: Reversible atomic processes as basic mechanisms of the glass transition [O] . Feng Ye, Wolfgang Sprengel, Rainer K. Wunderlich, 2007

机译：从封面开始：可逆原子过程是玻璃化转变的基本机制
7. Reversible atomic processes as basic mechanisms of the glass transition [O] . Ye, Feng, Sprengel, Wolfgang, Wunderlich, Rainer K., 2007

机译：可逆原子过程是玻璃化转变的基本机制

Reversible atomic processes as basic mechanisms of the glass transition

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