Absorption and desorption of deuterium on graphite at elevated temperatures
Absorption and desorption of deuterium on graphite at elevated temperatures
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DOI：
10.1016/0022-3115(88)90247-4
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发表时间：
1988-07
影响因子：
3.1
通讯作者：
H. Atsumi;S. Tokura;M. Miyake
中科院分区：
文献类型：
--
作者：
H. Atsumi;S. Tokura;M. Miyake
研究了高温下石墨在氘气气氛中的吸氘和脱附行为。在真空中以10° C/min的恒定加热速率进行热脱附测量。溶解度可表示为S（STP cm 3/g）= 1.9× 10− 4 p 1 2（Pa）exp [19（kJ/mol）/RT]。石墨上的氘解吸曲线似乎在约140° C、480° C和930° C处具有三个峰。第二个峰可以归因于氘的孔扩散，用D（cm 2/s）= 1800 exp [-121（kJ/mol）/RT]表示。第三个峰可以归因于石墨填料颗粒中的体扩散，并且这可以表示为D（cm 2/s）= 1.69 exp [-251（kJ/mol）/RT]。
The absorption and desorption behavior of deuterium has been studied on graphite exposed to a deuterium gas atmosphere at elevated temperatures. Thermal desorption measurements have been carried out at a constant heating rate of 10° C/min in vacuum. The solubility can be expressed by S (STP cm 3/g)= 1.9× 10− 4 p 1 2 (Pa) exp [19 (kJ/mol)/RT]. Deuterium desorption curves on graphite seem to have three peaks at approximately 140° C, 480° C and 930° C. The second peak may be attributed to pore diffusion of deuterium expressed by D (cm 2/s)= 1800 exp [− 121 (kJ/mol)/RT]. The third peak may be attributed to bulk diffusion in graphite filler grains, and this can be expressed by D (cm 2/s)= 1.69 exp [− 251 (kJ/mol)/RT].