Effect of mechanical grinding in argon and hydrogen atmosphere on microstructure of graphite

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作者：
Touzik, A. [1 ]
Hentsche, M. [1 ]
Wenzel, R. [2 ]
Hermann, H. [1 ]
机构：
[1] Leibniz Institute for Solid State and Materials Research Dresden, P.O. Box 27 01 16, D-01171 Dresden, Germany
[2] Technical University Dresden, Institute of Physical Chemistry and Electrochemistry, D-01062 Dresden, Germany
来源：
Journal of Alloys and Compounds | 2006年 / 421卷 / 1-2期
关键词：
Structural transformations and amorphization of graphite upon high-energy ball-milling under argon and hydrogen atmosphere are studied. Nano-scale carbon particles were characterized by nitrogen adsorption measurements (BET surface area) and high-resolution transmission electron microscopy (HRTEM). The pore size distribution (PSD) was determined by the Dollimore-Heal analysis. Maxima on PSD curves can be attributed to nanoscale structures formed by exfoliated graphite sheets or stacks of graphite sheets. The pore volume for each kind of pores strongly depends on the milling atmosphere. In contrast to that the maximal contribution of ultra micropores to the total porosity reaches about 40 vol.% independently of the milling atmosphere. © 2005 Elsevier B.V. All rights reserved;
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页码：141 / 145
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