Thermal Damage in Diamonds: the Protective Effect of Titanium Coating
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
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=S1516-14392015000400683 |
Resumo: | Many of the applications of diamonds expose them to high temperatures and atmospheres containing oxygen. Under these circumstances two important phenomena responsible for the thermal damage of diamonds are: oxidation and graphitization. It is well known that coatings on diamonds provide a better performance, but the amount of information in literature about the protective mechanism of these coatings is very scarce. The present work proposes a study about the thermal damage effect on diamonds with titanium (Ti) coating comparing with diamonds without it. Samples of uncoated diamonds and Ti- coated diamonds were heat treated at 1200 °C during different periods of time and characterized prior to and after the treatments. Differential thermal analysis (DTA) was performed to observe the temperatures that transformations in diamonds occur. The analysis of phases present in the samples and the observation of new phases formed were carried out by means of X-ray diffraction (XRD). In order to observe the diamond surface and how the chemical elements are distributed in it, the samples were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results prove the protective capability of the Ti coatings, clarifying the protective mechanism against the thermal damage. |
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Materials research (São Carlos. Online) |
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Thermal Damage in Diamonds: the Protective Effect of Titanium Coatingthermal damagetitanium coatingoxidationgraphitizationMany of the applications of diamonds expose them to high temperatures and atmospheres containing oxygen. Under these circumstances two important phenomena responsible for the thermal damage of diamonds are: oxidation and graphitization. It is well known that coatings on diamonds provide a better performance, but the amount of information in literature about the protective mechanism of these coatings is very scarce. The present work proposes a study about the thermal damage effect on diamonds with titanium (Ti) coating comparing with diamonds without it. Samples of uncoated diamonds and Ti- coated diamonds were heat treated at 1200 °C during different periods of time and characterized prior to and after the treatments. Differential thermal analysis (DTA) was performed to observe the temperatures that transformations in diamonds occur. The analysis of phases present in the samples and the observation of new phases formed were carried out by means of X-ray diffraction (XRD). In order to observe the diamond surface and how the chemical elements are distributed in it, the samples were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results prove the protective capability of the Ti coatings, clarifying the protective mechanism against the thermal damage.ABM, ABC, ABPol2015-08-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000400683Materials Research v.18 n.4 2015reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1516-1439.299414info:eu-repo/semantics/openAccessRosa,Marcio Carneiro GarciaPeçanha,Matheus PaesFilgueira,Marcelloeng2017-07-18T00:00:00Zoai:scielo:S1516-14392015000400683Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-07-18T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
title |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
spellingShingle |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating Rosa,Marcio Carneiro Garcia thermal damage titanium coating oxidation graphitization |
title_short |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
title_full |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
title_fullStr |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
title_full_unstemmed |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
title_sort |
Thermal Damage in Diamonds: the Protective Effect of Titanium Coating |
author |
Rosa,Marcio Carneiro Garcia |
author_facet |
Rosa,Marcio Carneiro Garcia Peçanha,Matheus Paes Filgueira,Marcello |
author_role |
author |
author2 |
Peçanha,Matheus Paes Filgueira,Marcello |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rosa,Marcio Carneiro Garcia Peçanha,Matheus Paes Filgueira,Marcello |
dc.subject.por.fl_str_mv |
thermal damage titanium coating oxidation graphitization |
topic |
thermal damage titanium coating oxidation graphitization |
description |
Many of the applications of diamonds expose them to high temperatures and atmospheres containing oxygen. Under these circumstances two important phenomena responsible for the thermal damage of diamonds are: oxidation and graphitization. It is well known that coatings on diamonds provide a better performance, but the amount of information in literature about the protective mechanism of these coatings is very scarce. The present work proposes a study about the thermal damage effect on diamonds with titanium (Ti) coating comparing with diamonds without it. Samples of uncoated diamonds and Ti- coated diamonds were heat treated at 1200 °C during different periods of time and characterized prior to and after the treatments. Differential thermal analysis (DTA) was performed to observe the temperatures that transformations in diamonds occur. The analysis of phases present in the samples and the observation of new phases formed were carried out by means of X-ray diffraction (XRD). In order to observe the diamond surface and how the chemical elements are distributed in it, the samples were analyzed by scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). The results prove the protective capability of the Ti coatings, clarifying the protective mechanism against the thermal damage. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-01 |
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=S1516-14392015000400683 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000400683 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1516-1439.299414 |
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.18 n.4 2015 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_ |
1754212665505349632 |