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《中国物理C》(英文)编辑部
2024年10月30日

In-situ EXAFS study on the thermal decomposition of TiH2

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ZHOU Ying-Li, ZHENG Li-Rong, CHU Sheng-Qi, WU Min, AN Peng-Fei, ZHANG Jing and HU Tian-Dou. In-situ EXAFS study on the thermal decomposition of TiH2[J]. Chinese Physics C, 2014, 38(3): 038001. doi: 10.1088/1674-1137/38/3/038001
ZHOU Ying-Li, ZHENG Li-Rong, CHU Sheng-Qi, WU Min, AN Peng-Fei, ZHANG Jing and HU Tian-Dou. In-situ EXAFS study on the thermal decomposition of TiH2[J]. Chinese Physics C, 2014, 38(3): 038001.  doi: 10.1088/1674-1137/38/3/038001 shu
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Received: 2013-04-22
Revised: 1900-01-01
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In-situ EXAFS study on the thermal decomposition of TiH2

    Corresponding author: ZHOU Ying-Li,
    Corresponding author: HU Tian-Dou,

Abstract: Thermal decomposition behaviors of TiH2 powder under a owing helium atmosphere and in a low vac- uum condition have been studied using an in situ EXAFS technique. By an EXAFS analysis containing the multiple scattering paths including H atoms, the changes of the hydrogen stoichiometric ratio and the phase transformation sequence are obtained. The results demonstrate that the initial decomposition temperature is dependent on experi- mental conditions, which occurs, respectively, at about 300 and 400℃ in a low vacuum condition and under a owing helium atmosphere. During the decomposition process of TiH2 in a low vacuum condition, the sample experiences a phase change process:δ(TiH2)→δ (TiHx)→δ(TiHx)+β(TiHx)→δ(TiHx)+β(TiHx)+α(Ti)→β(TiHx)+α(Ti)→α(Ti)+β(Ti). This study o ers a way to detect the structural information of hydrogen. A detailed discussion about the decomposition process of TiH2 is given in this paper.

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