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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Aging effects on palladium pressure-composition isotherms during tritium storage
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Aging effects on palladium pressure-composition isotherms during tritium storage

机译：tri存储过程中老化对钯压力组成等温线的影响

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摘要

Aging effects on palladium pressure-composition isotherms have been studied for tritium storage up to 9 years. Storage properties are remarkably well preserved during aging, and only small modifications of P-c isotherms are observed: a decrease of plateau pressures, and shifts of alpha and beta single phase regions towards greater stoichiometries. For the plateau pressures, the main changes are observed during the first half of the aging period (approx= 5 years) while phenomena slow down quickly to become almost negligible during further aging. By contrast, the displacements of alpha and beta single phase solubilities are more continuous. These observations can all the correlated to the evolution of the (micro)structural properties. For instance, the ~3He generated by tritium decay and retained in the metallic lattice tends to segregate into bubbles, where it has only a weak influence on the structure and consequently on the storage properties. The bubble formation has been demonstrated by transmission electron microscopy (TEM) observations, and the global conservation of structural formation has been demonstrated by transmission electron microscopy (TEM) observations, and the global conservation of structural properties has been established by X-ray and neutron diffraction and by X-ray absorption.
机译：已经研究了storage对钯压力组成等温线的老化效应，可存储长达9年的时间。在老化过程中，可以很好地保留存储特性，并且仅观察到P-c等温线的微小变化：平台压力的降低以及α和β单相区域向更大化学计量的偏移。对于高原压力，在老化的前半部分（约5年）观察到主要变化，而现象在进一步老化时迅速减慢，几乎可以忽略不计。相反，α和β单相溶解度的置换更连续。这些观察结果都与（微观）结构特性的演变有关。例如，由tri衰变产生并保留在金属晶格中的〜3He趋向于分离成气泡，在气泡中它对结构的影响很小，因此对存储性能的影响也很小。通过透射电子显微镜（TEM）观察证明了气泡的形成，并且通过透射电子显微镜（TEM）观察证明了结构的总体守恒，并且通过X射线和中子确定了结构性质的全局守恒衍射和通过X射线吸收。

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