2014年3月15日 · By combining a long-range order method (XRD) and short-range order spectroscopy techniques (EXAFS and NMR), a unique view on the microstructure of UC 2, before and after heat treatment, and of U 2 C 3 phase has been achieved.

2021年9月10日 · A PANalytical XPert PRO diffractometer using Cu Kα radiation in a 2θ range between 5 and 90 ° at room temperature was used to run XRD measurements for the reactant and the synthesized UC powder.

In this study, uranium dicarbide (UC2) has been prepared by arc melting and heat treated under vacuum to form uranium sequicarbide (U2C3) in the presence of a second phase UC2 z.

2014年3月1日 · 通过结合长程有序方法 (XRD) 和短程有序光谱技术 (EXAFS 和 NMR)，获得了对热处理前后 UC2 以及 U2C3 相微观结构的独特观察。 摘要 在本研究中，二碳化铀 (UC2) 通过电弧熔化和真空热处理制备二碳化铀 (UC2)，在第二相 UC2-z 存在下形成二碳化铀 (U2C3)。 铸造和热处理的两种样品均已通过化学分析、X 射线衍射 (XRD)、13C 魔角旋转核磁共振 (MAS-NMR) 和扩展 X 射线吸收精细结构 (EXAFS) 进行表征。 已经确定了 U 和 C 原子的组成、纯度、各种环 …

2025年3月5日 · Semantic Scholar extracted view of "Structure of UC2 and U2C3:XRD, 13C NMR and EXAFS study" by U. C. Nuñez et al.

By combining a long-range order method (XRD) and short-range order spectroscopy techniques (EXAFS and NMR), a unique view on the microstructure of UC 2, before and after heat treatment, and of U 2 C 3 phase has been achieved. Dive into the research topics of 'Structure of UC2 and U2C3:XRD, 13C NMR and EXAFS study'.

In this study, uranium dicarbide (UC 2) has been prepared by arc melting and heat treated under vacuum to form uranium sequicarbide (U 2 C 3) in the presence of a second phase UC 2Àz. Both samples, as cast and heat treated, have been characterised by

2010年1月31日 · The electronic structure and mechanical properties of UC2 and U2C3 have been systematically investigated using first-principles calculations by the projector-augmented-wave (PAW) method.

The system UC-UC/sub 2/ was investigated at temperatures to 2200 deg C utilizing high-temperature x-ray-diffraction techniques. UC/sub 2/, which has the CaC/sub 2/ structure, was shown to transform… The positions of the uranium atoms are …

2014年3月15日 · By combining a long-range order method (XRD) and short-range order spectroscopy techniques (EXAFS and NMR), a unique view on the microstructure of UC 2, before and after heat treatment, and of U 2 C 3 phase has been achieved.