【摘要】 本文通过带有EXAFS附件的X射线衍射仪在实验室用XRD和EXAFS两种方法完成了对充氢镍箔放氢过程的研究,测定了放氢过程中样品中NiH相含量随释氢时间的变化,XRD和EXAFS的结果是一致的,均呈指数规律下降。实验还确定了NiH相中镍和氢的原子比,说明了氢在点阵中的位置,证明实验室EXAFS装置适合这类问题的研究。更多还原

【Abstract】 The process of releasing hydrogen from nickel foil permeated with hydrogen is investigated by XRD and a laboratory EXAFS equipment which is attached on a X-ray spectrometer. The results obtained by these two methods show that the phase content of NiH decrease exponentially in this process We also determine a definite atomic ratio of Ni and H in NiH phase and point out the location of hydrogen in the lattice. This laboratory. EXAFS equipment is proved to be suitable for the study of this kind of problem.更多还原