Computer simulation of the mechanism for the synthesis of carbonado diamond

Detalhes bibliográficos
Autor(a) principal: Rangel,João José de Assis
Data de Publicação: 2006
Outros Autores: Rosenthal,Ruben, Bobrovnitchii,Guerold Sergueevitch, Monteiro,Sergio Neves
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400012
Resumo: The synthesis mechanism associated with the formation of carbonado type polycrystalline diamond has been analyzed. This analysis was performed by computer simulation of the field of temperature developed at the moment of graphite transformation into polycrystalline diamond. It was found that during the synthesis of this carbonado diamond, a strong non-steady thermal condition occurs, leading to changes in the thermodynamic equilibrium. As a consequence, a region comprising non-transformed graphite and carbonado with different characteristics is established. An experimental comparison was carried out between the carbonado hardness profile and the field of temperatures. The results show that the higher the temperature attained at local points inside the high-pressure chamber, the higher the hardness of the diamond. The simulation and experimental results indicated that concurrent mechanisms are acting during the carbonado synthesis.
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spelling Computer simulation of the mechanism for the synthesis of carbonado diamondcomputer simulationcarbonadopolycrystalline diamondfield of temperatureThe synthesis mechanism associated with the formation of carbonado type polycrystalline diamond has been analyzed. This analysis was performed by computer simulation of the field of temperature developed at the moment of graphite transformation into polycrystalline diamond. It was found that during the synthesis of this carbonado diamond, a strong non-steady thermal condition occurs, leading to changes in the thermodynamic equilibrium. As a consequence, a region comprising non-transformed graphite and carbonado with different characteristics is established. An experimental comparison was carried out between the carbonado hardness profile and the field of temperatures. The results show that the higher the temperature attained at local points inside the high-pressure chamber, the higher the hardness of the diamond. The simulation and experimental results indicated that concurrent mechanisms are acting during the carbonado synthesis.ABM, ABC, ABPol2006-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400012Materials Research v.9 n.4 2006reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392006000400012info:eu-repo/semantics/openAccessRangel,João José de AssisRosenthal,RubenBobrovnitchii,Guerold SergueevitchMonteiro,Sergio Neveseng2007-03-22T00:00:00Zoai:scielo:S1516-14392006000400012Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2007-03-22T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Computer simulation of the mechanism for the synthesis of carbonado diamond
title Computer simulation of the mechanism for the synthesis of carbonado diamond
spellingShingle Computer simulation of the mechanism for the synthesis of carbonado diamond
Rangel,João José de Assis
computer simulation
carbonado
polycrystalline diamond
field of temperature
title_short Computer simulation of the mechanism for the synthesis of carbonado diamond
title_full Computer simulation of the mechanism for the synthesis of carbonado diamond
title_fullStr Computer simulation of the mechanism for the synthesis of carbonado diamond
title_full_unstemmed Computer simulation of the mechanism for the synthesis of carbonado diamond
title_sort Computer simulation of the mechanism for the synthesis of carbonado diamond
author Rangel,João José de Assis
author_facet Rangel,João José de Assis
Rosenthal,Ruben
Bobrovnitchii,Guerold Sergueevitch
Monteiro,Sergio Neves
author_role author
author2 Rosenthal,Ruben
Bobrovnitchii,Guerold Sergueevitch
Monteiro,Sergio Neves
author2_role author
author
author
dc.contributor.author.fl_str_mv Rangel,João José de Assis
Rosenthal,Ruben
Bobrovnitchii,Guerold Sergueevitch
Monteiro,Sergio Neves
dc.subject.por.fl_str_mv computer simulation
carbonado
polycrystalline diamond
field of temperature
topic computer simulation
carbonado
polycrystalline diamond
field of temperature
description The synthesis mechanism associated with the formation of carbonado type polycrystalline diamond has been analyzed. This analysis was performed by computer simulation of the field of temperature developed at the moment of graphite transformation into polycrystalline diamond. It was found that during the synthesis of this carbonado diamond, a strong non-steady thermal condition occurs, leading to changes in the thermodynamic equilibrium. As a consequence, a region comprising non-transformed graphite and carbonado with different characteristics is established. An experimental comparison was carried out between the carbonado hardness profile and the field of temperatures. The results show that the higher the temperature attained at local points inside the high-pressure chamber, the higher the hardness of the diamond. The simulation and experimental results indicated that concurrent mechanisms are acting during the carbonado synthesis.
publishDate 2006
dc.date.none.fl_str_mv 2006-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400012
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392006000400012
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.9 n.4 2006
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212658491424768

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