【摘要】 在吸、放氘达到动态平衡条件下 ,实时收集了重水电解池中钯电极的中子衍射数据。分析结果表明 :金属钯经电解充氘后 ,原纯Pd的α相完全消失 ,过渡到PdDx 的 β相 ,并观测到一个新的α′相与 β相共存 ;在 β相的PdDx 中 ,D原子不但进入钯面心立方点阵的八面体位置 ,而且进入了其四面体位置。氘原子占上述 2种位置的几率分别为 0 3和 0 2 ,从而推出每个单胞的平均充氘量为 2 8个原子 (即x =0 .7)。更多还原

【Abstract】 Neutron diffraction data of palladium electrode in heavy water electrolysis cell have been collected under the balance condition of absorption and evolution of deuterium. The analysis results show that after palladium is charged with deuterium, the original α phase disappears thoroughly and the sample has a transition from α phase into β phase and a new α′ phase coexisting with the β phase is also observed. In the β phase of PdD x system deuterium atoms enter not only the octahedral sites but also the tetrahedral ones of the Pd face centered cubic lattice. The occupancy of deuterium atom in above mentioned two types of sites is 0.3 and 0.2 respectively. From this, x is determined to be 0.7.更多还原