Отправлено: 14.01.08 11:39. Заголовок: От суперионной к электронной проводимости угля?!

От суперионной к электронной проводимости угля?!

Entropy Theory of Metamorphic Transitions in Coals
M. I. Novgorodova*, Yu. M. Gufan**, N. F. Losev**†, and I. N. Moshchenko**
* Fersman Mineralogy Museum, Russian Academy of Sciences, Leninski pr. 18/2, Moscow, 117071 Russia
e-mail min@minmuz. msk. su
** North Caucasian Scientific Center of Higher School,
Rostov-on-Don, ul. Pushkinskaya 140, 344006 Russia
e-mail: gufan@gufan. rnd. runnet. ru
Received February 4, 1998

Abstract—A model of a metamorphic phase transition in coals has been suggested, which explains the change
of the superionic conduction of coals at early stages of metamorphism by the electronic conductivity of anthra-
cites. The model is based on a concept of quasiplane fragments of aromatic rings, the main component of micro-
structure of coals, the percolation approximation for determining the carbon concentration responsible for the
formation of infinite clusters of aromatic rings, and the Lichtenecker approximation for determining the con-
ductivity of the object “coal substance + rock”. © 2000 MAIK “Nauka/Interperiodica”.
http://www.maik.rssi.ru/abstract/cryst/0/cryst2_0p277abs.htm