Analysis of electrochemical disintegration process of graphite matrix
Analysis of electrochemical disintegration process of graphite matrix
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石墨基体电化学崩解过程分析
DOI：
10.1016/j.electacta.2010.09.050
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发表时间：
2010-12
影响因子：
6.6
通讯作者：
Wen, Mingfen
中科院分区：
文献类型：
--
作者：
Tian, Lifang;Chen, Jing;Wen, Mingfen
研究了以硝酸铵为电解液的电化学法分解高温气冷堆模拟燃料元件中的石墨基质。研究了盐浓度、系统温度和电流密度等工艺参数对石墨碎屑破碎率的影响。实验结果表明，温度和盐浓度对崩解速率的影响不大。电流密度对石墨碎块的崩解速率有很大影响。此外，石墨碎片中引入氧的含量与电流密度和电解液浓度无关。此外，根据X射线衍射仪(MOUD)的X射线衍射曲线拟合分析确定的微观结构参数，分析了碎化前后石墨的结构演变。可以肯定地认为，石墨的解体可以归因于晶面间外来分子的嵌入和部分氧化的影响。深入描述了由碳的插层部分和进一步氧化部分共同作用导致石墨晶体崩解的解体过程。
The electrochemical method with ammonium nitrate as electrolyte was studied to disintegrate the graphite matrix from the simulative fuel elements for high temperature gas-cooled reactor. The influences of process parameters, including salt concentration, system temperature and current density, on the disintegration rate of graphite fragments were investigated in the present work. The experimental results showed that the disintegration rate depended slightly on the temperature and salt concentration. The current density strongly affected the disintegration rate of graphite fragments. Furthermore, the content of introduced oxygen in final graphite fragments was independent of the current density and the concentration of electrolyte. Moreover, the structural evolution of graphite was analyzed based on the microstructural parameters determined by X-ray diffraction profile fitting analysis using MAUD (material analysis using diffraction) before and after the disintegration process. It may safely be concluded that the graphite disintegration can be ascribed to the influences of the intercalation of foreign molecules in between crystal planes and the partial oxidation involved. The disintegration process was described deeply composed of intercalate part and further oxidation part of carbon which effected together to lead to the collapse of graphite crystals.
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影响因子：
10.9
作者：
J. Peckett;P. Trens;R. Gougeon;A. Pöppl;R. Harris;M. Hudson
通讯作者：
J. Peckett;P. Trens;R. Gougeon;A. Pöppl;R. Harris;M. Hudson
影响因子：
1.7
作者：
Zongxin Wu;Dengcai Lin;Daxin Zhong
通讯作者：
Zongxin Wu;Dengcai Lin;Daxin Zhong
影响因子：
4
作者：
Hamwi, A;Marchand, V
通讯作者：
Marchand, V
DOI：
--
发表时间：
1993
期刊：
--
影响因子：
--
作者：
H. Pierson
通讯作者：
H. Pierson
影响因子：
1.5
作者：
H. Reutler;G. Lohnert
通讯作者：
H. Reutler;G. Lohnert