Hydrogen behavior in the metal detected by stress measurement and ESD measurement.

金属中的氢引起氢脆，这是各种金属变脆和断裂的过程。氢检测似乎是问题的最困难的方面之一，并且该现象尚未完全理解。我们测量了在氢等离子体辐照期间金属薄膜的表面应力，并且检测到具有滞后的表面压应力。结构复杂的合金被用作结构材料。不知道氢在合金中的位置。我们尝试用电子刺激脱附（ESD）方法观察金属表面二维氢浓度来研究氢在金属合金中的行为。我们已经检测到微米级表面改性的氢分布。

Hydrogen in metals causes hydrogen embrittlement, which is the process of various metals to become brittle and fracture. Hydrogen detection seems to be one of the most difficult aspects of the problem and the phenomenon was not completely understood.We have measured a surface stress of metal thin film during hydrogen plasma irradiation and detected compressive surface stress, which had a hysteresis. Alloys of complex structure are used as structural materials. It is not known where the hydrogen is in the alloy. We have tried to investigate hydrogen behavior in metal alloys from observation of two-dimensional hydrogen concentration on metal surface using electron stimulated desorption (ESD) method. We have detected micron order surface modification of hydrogen distribution.