Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of Aerospace Technology and Management (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000100033 |
Resumo: | Abstract: A stationary experiment was performed to study the degradation of carbon-based materials by immersion in a plasma jet. In the experiment, graphite and C/C composite were chosen as the target materials, and the reactive plasma jet was generated by an air plasma torch. For macroscopic study of the material degradation, the sample's mass losses were measured as function of the exposure time under various temperatures on the sample surface. A microscopic analysis was then carried out for the study of microscopic aspects of the erosion of material surface. These experiments showed that the mass loss per unit area is approximately proportional to the exposure time and strongly depends on the temperature of the material surface. The mass erosion rate of graphite was appreciably higher than the C/C composite. The ablation rate in the carbon matrix region in C/C composite was also noticeably higher than that in the fiber region. In addition, the latter varied according to the orientation of fibers relatively to the flow direction. These tests indicated an excellent ablation resistance of the C/C composite, thus being a reliable material for rocket nozzles and heat shielding elements of the protection systems of hypersonic apparatuses from aerodynamic heating. |
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Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jetGraphiteC/C CompositeAblationPlasma torchCalorimetric probeEnthalpy probeAbstract: A stationary experiment was performed to study the degradation of carbon-based materials by immersion in a plasma jet. In the experiment, graphite and C/C composite were chosen as the target materials, and the reactive plasma jet was generated by an air plasma torch. For macroscopic study of the material degradation, the sample's mass losses were measured as function of the exposure time under various temperatures on the sample surface. A microscopic analysis was then carried out for the study of microscopic aspects of the erosion of material surface. These experiments showed that the mass loss per unit area is approximately proportional to the exposure time and strongly depends on the temperature of the material surface. The mass erosion rate of graphite was appreciably higher than the C/C composite. The ablation rate in the carbon matrix region in C/C composite was also noticeably higher than that in the fiber region. In addition, the latter varied according to the orientation of fibers relatively to the flow direction. These tests indicated an excellent ablation resistance of the C/C composite, thus being a reliable material for rocket nozzles and heat shielding elements of the protection systems of hypersonic apparatuses from aerodynamic heating.Departamento de Ciência e Tecnologia Aeroespacial2010-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000100033Journal of Aerospace Technology and Management v.2 n.1 2010reponame:Journal of Aerospace Technology and Management (Online)instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA)instacron:DCTA10.5028/jatm.2010.02013340info:eu-repo/semantics/openAccessPetraconi,GilbertoEssiptchouk,Alexei MikhailovichCharakhovski,Leonid IvanovichOtani,ChoyuMaciel,Homero SantiagoPessoa,Rodrigo SávioGregori,Maria LuisaCosta,Sônia Fonsecaeng2017-05-29T00:00:00Zoai:scielo:S2175-91462010000100033Revistahttp://www.jatm.com.br/ONGhttps://old.scielo.br/oai/scielo-oai.php||secretary@jatm.com.br2175-91461984-9648opendoar:2017-05-29T00:00Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA)false |
dc.title.none.fl_str_mv |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
title |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
spellingShingle |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet Petraconi,Gilberto Graphite C/C Composite Ablation Plasma torch Calorimetric probe Enthalpy probe |
title_short |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
title_full |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
title_fullStr |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
title_full_unstemmed |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
title_sort |
Degradation of carbon-based materials under ablative conditions produced by a high enthalpy plasma jet |
author |
Petraconi,Gilberto |
author_facet |
Petraconi,Gilberto Essiptchouk,Alexei Mikhailovich Charakhovski,Leonid Ivanovich Otani,Choyu Maciel,Homero Santiago Pessoa,Rodrigo Sávio Gregori,Maria Luisa Costa,Sônia Fonseca |
author_role |
author |
author2 |
Essiptchouk,Alexei Mikhailovich Charakhovski,Leonid Ivanovich Otani,Choyu Maciel,Homero Santiago Pessoa,Rodrigo Sávio Gregori,Maria Luisa Costa,Sônia Fonseca |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Petraconi,Gilberto Essiptchouk,Alexei Mikhailovich Charakhovski,Leonid Ivanovich Otani,Choyu Maciel,Homero Santiago Pessoa,Rodrigo Sávio Gregori,Maria Luisa Costa,Sônia Fonseca |
dc.subject.por.fl_str_mv |
Graphite C/C Composite Ablation Plasma torch Calorimetric probe Enthalpy probe |
topic |
Graphite C/C Composite Ablation Plasma torch Calorimetric probe Enthalpy probe |
description |
Abstract: A stationary experiment was performed to study the degradation of carbon-based materials by immersion in a plasma jet. In the experiment, graphite and C/C composite were chosen as the target materials, and the reactive plasma jet was generated by an air plasma torch. For macroscopic study of the material degradation, the sample's mass losses were measured as function of the exposure time under various temperatures on the sample surface. A microscopic analysis was then carried out for the study of microscopic aspects of the erosion of material surface. These experiments showed that the mass loss per unit area is approximately proportional to the exposure time and strongly depends on the temperature of the material surface. The mass erosion rate of graphite was appreciably higher than the C/C composite. The ablation rate in the carbon matrix region in C/C composite was also noticeably higher than that in the fiber region. In addition, the latter varied according to the orientation of fibers relatively to the flow direction. These tests indicated an excellent ablation resistance of the C/C composite, thus being a reliable material for rocket nozzles and heat shielding elements of the protection systems of hypersonic apparatuses from aerodynamic heating. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-04-01 |
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=S2175-91462010000100033 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2175-91462010000100033 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5028/jatm.2010.02013340 |
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 |
Departamento de Ciência e Tecnologia Aeroespacial |
publisher.none.fl_str_mv |
Departamento de Ciência e Tecnologia Aeroespacial |
dc.source.none.fl_str_mv |
Journal of Aerospace Technology and Management v.2 n.1 2010 reponame:Journal of Aerospace Technology and Management (Online) instname:Departamento de Ciência e Tecnologia Aeroespacial (DCTA) instacron:DCTA |
instname_str |
Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
instacron_str |
DCTA |
institution |
DCTA |
reponame_str |
Journal of Aerospace Technology and Management (Online) |
collection |
Journal of Aerospace Technology and Management (Online) |
repository.name.fl_str_mv |
Journal of Aerospace Technology and Management (Online) - Departamento de Ciência e Tecnologia Aeroespacial (DCTA) |
repository.mail.fl_str_mv |
||secretary@jatm.com.br |
_version_ |
1754732530387386368 |