Structure of glassy early-transition-metal-late-transition-metal hydrides
Structure of glassy early-transition-metal-late-transition-metal hydrides
复制标题
玻璃态早过渡金属后过渡金属氢化物的结构
DOI：
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发表时间：
1983
期刊：
影响因子：
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通讯作者：
W. Johnson
中科院分区：
文献类型：
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作者：
K. Samwer;W. Johnson
氢被用作探针来获得金属玻璃的结构信息。从实验径向分布函数的结果显示，在最近邻距离的Zr原子的显着变化的Zr_3Rh和Zr_2Pd的玻璃的掺杂和未掺杂。测得的距离表明，氢主要占据四面体网站定义的四个锆原子在正常的双金属化条件下（1大气压H2，200°C）。这些网站的统计模型的基础上，目前的致密随机堆积模型是在良好的协议与所观察到的氢的吸收能力。我们预测H-H相互作用应限制Zr基玻璃中氢含量的上限值为2.5（H/金属原子）。
Hydrogen is used as a probe for obtaining structural information on metallic glasses. Results from experimental radial distribution functions of hydrided and unhydrided Zr3Rh and Zr2Pd glasses show a significant change in the nearest-neighbor distance of Zr atoms. The measured distance suggests that hydrogen occupies mainly tetrahedral sites defined by four Zr atoms under normal hydriding conditions (1 atm H2, ∼200°C). A statistical model for these sites based on current dense-random-packing models is in good agreement with the observed absorption capacity for hydrogen. We predict that H-H interaction should limit the upper value of hydrogen content in Zr-based glasses to 2.5 (H/metal atom).