Kinetics study of thermal decomposition of TiD1.92

被引：0
作者：
Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang [1 ]
621900, China
机构：
[1] Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang
来源：
Yuanzineng Kexue Jishu | / 3卷 / 529-533期
关键词：
Diffusion; Kinetics; Phase transformation; Thermal analysis; TiD[!sub]1.92[!/sub;
D O I：
10.7538/yzk.2015.49.03.0529
中图分类号：
学科分类号：
摘要：
The thermal decomposition of TiD1.92 powder to titanium was investigated by means of thermal analysis and theoretical calculation. The model that considers bulk and surface processes during desorption shows three kinds of peak in the spectrum. They are all related to phase transformation. The calculated spectrum of spheres particle model is different from the spectrum of planar particle model for their different diffusion models. The decomposition behavior of TiD1.92 by thermal analysis is consist with the result of planar particle model, the rate controlling process in δ-Ti and β-Ti is the reaction between hydrogen atoms to form gaseous molecules on the surface, and the rate controlling process of decomposition during β→α transform is the deuterium diffusion in α-Ti. Arrhenius plots of experiment data give 152.8 kJ/mol of the surface reaction activation and 68.6 kJ/mol of the deuterium diffusion activation in α-Ti. ©, 2015, Atomic Energy Press. All right reserved.
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页码：529 / 533
页数：4
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