• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Measurement of diffusion process of iron atoms under high pressure of hydrogen by time-domain analysis of nuclear resonant scattering of X-rays
【24h】

Measurement of diffusion process of iron atoms under high pressure of hydrogen by time-domain analysis of nuclear resonant scattering of X-rays

机译：X射线核共振散射的时域分析法测量氢高压下铁原子的扩散过程

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We applied the time-domain analysis of nuclear resonant scattering (NRS) of X-rays for the study of the hydrogen-induced enhancement of atomic diffusion. The time-domain analysis of NRS is a powerful technique for studying diffusion processes on an atomic scale. The NRS measurement combined with high-pressure technique enables the direct measurement of self-diffusion processes under high hydrogen pressures. In this preliminary experiment, self-diffusion in 4 μm thick ~(57)Fe foils at 0.8 GPa was investigated. The samples of the ~(57)Fe were encapsulated with MgO or NaCl. Faster decays caused by diffusion of Fe atoms were observed in the time spectra of NRS at high temperatures. This enhancement of diffusion is believed to be the hydrogen-induced effect. In the present experiment, hydrogen should have been supplied to the samples by reaction with water originally adsorbed on NaCl/MgO powder particles. It was concluded that the diffusion of ~(57)Fe atoms under high pressure can be studied by nuclear resonant scattering of X-rays using a compact cubic-anvil press. The NRS method can also be extended to the study of atomic diffusion in the subsurface region by doping ~(57)Fe layer(s) at known depths.
机译：我们将X射线的核共振散射（NRS）的时域分析用于研究氢诱导的原子扩散增强。 NRS的时域分析是一种研究原子级扩散过程的强大技术。 NRS测量与高压技术相结合，可以直接测量高氢气压下的自扩散过程。在此初步实验中，研究了在0.8 GPa下在4μm厚〜（57）Fe箔中的自扩散。 〜（57）Fe的样品用MgO或NaCl封装。在高温下，NRS的时间谱中观察到了由铁原子扩散引起的更快的衰变。扩散的这种增强被认为是氢诱导的作用。在本实验中，应该通过与最初吸附在NaCl / MgO粉末颗粒上的水反应将氢提供给样品。结论是，可以使用紧凑的立方砧压机通过X射线的核共振散射研究高压下〜（57）Fe原子的扩散。通过在已知深度掺杂〜（57）Fe层，NRS方法也可以扩展到研究地下区域的原子扩散。

著录项

  • 来源
    《Applied Surface Science》 |2009年第4期|984-986|共3页
  • 作者

    Hidetaka Kasai; Taizo Kawauchi; Yuh Fukai; Xiao-Wei Zhang; Shunji Kishimoto; Takumi Kikegawa; Eiji Ohtani; Tatsuo Okano;

  • 作者单位

    Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 1538505, Japan;

    Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 1538505, Japan;

    Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 3050801, Japan;

    Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 3050801, Japan;

    Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 3050801, Japan;

    Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 3050801, Japan;

    Graduate School of Science and Faculty of Science, Tohoku University, Sendai, Miyagi 9808578, Japan;

    Institute of Industrial Science, University of Tokyo, 4-6-1, Komaba, Meguro-ku, Tokyo 1538505, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diffusion; iron; hydrogen; nuclear resonant scattering; high pressure;

    机译：扩散;铁;氢;核共振散射高压力;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号