More than 1000oC is suitable for the reorganization of carbon atoms (i.e. recrystalization) on graphene to happen. If the heating time is several minutes long, defects like vacancies or distorted hexagonal ring can be healed, especially in the present of amorphous carbon.
My question is what happened to the graphene structure when I heat it to higher than 1000oC (1500oC, 2000oC, or even higher than that), but cool down it to room temperature within few seconds, or even less than 1 second. Will the graphene structure maintain, improve (via recrystallization) or amorphize? Can this behavior generalize to other graphitic structures such as HOPG, multilayered graphene, carbon nanotubes?
If possible, please suggest any papers or books relating to the behaviors of graphitic structure under annealing and quenching processes.
Thanks
I think your idea to heal the defects of carbon network inside graphene or to reconstruct carbon network from carbon atoms in amorphous shape of carbon by using heat effects over 1000 C and suddenly cool in few second. actually, it must be under vacuum condition to prevent the burning of carbon after 400 C. then you should take into your account the chemical structure of graphene and its phase diagram. I think the temperature will destruct the bonds among the carbon network to convert it to amorphous shape or it will change it to carbon like diamond ( Not diamond). That for graphene not reduced graphene oxide due to even under vacuum the small amount of oxygen function groups from the inside sample will burn it. the next book, Thesis and articles may be will help you
Some links on graphene and heat conduction.
http://www.eurekalert.org/pub_releases/2015-07/iiop-ges071615.php
http://spectrum.ieee.org/nanoclast/semiconductors/materials/heat-propagates-as-a-wave-in-graphene
http://phys.org/news/2015-03-graphene.html
http://phys.org/news/2015-03-scientists-cool-graphene.html
http://phys.org/news/2013-03-graphene-superheated-corrode-diamonds.html
http://phys.org/news/2015-06-graphene-heat-transfer-riddle-unraveled.html
http://nextbigfuture.com/2014/05/unlimited-heat-conduction-in-graphene.html
http://www.eurekalert.org/pub_releases/2010-05/uoc--hnm051010.php
http://phys.org/news/2013-07-graphene-efficient-electronics-cooling.html
http://phys.org/news/2012-01-electronics-cool-graphene-impacts-dissipation.html
http://nextbigfuture.com/2014/03/graphene-alters-copper-wires-dissipate.html
Regards,
Joachim
Thanks Joachim Pimiskern for your information.
These links are basically about the heat conduction of graphene. However, what I am interested in is how structure of graphene response, including the displacement and the reorganization of the lattice, at the extreme conditions, i.e. extremely high temperature and extremely fast quenching.
I think your idea to heal the defects of carbon network inside graphene or to reconstruct carbon network from carbon atoms in amorphous shape of carbon by using heat effects over 1000 C and suddenly cool in few second. actually, it must be under vacuum condition to prevent the burning of carbon after 400 C. then you should take into your account the chemical structure of graphene and its phase diagram. I think the temperature will destruct the bonds among the carbon network to convert it to amorphous shape or it will change it to carbon like diamond ( Not diamond). That for graphene not reduced graphene oxide due to even under vacuum the small amount of oxygen function groups from the inside sample will burn it. the next book, Thesis and articles may be will help you
Try to look at:
Measurements of the melting point of graphite and the properties
of liquid carbon (a review for 1963–2003)
A.I. Savvatimskiy
Carbon 43 (2005) 1115-1142.
Regards.
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