Computer-based simulation of high-temperature corrosion phenomena
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000100022 |
Resumo: | The aim of this paper is to introduce a computer simulation tool, which is designed for prediction of service-life of components operating under corrosive conditions such as carburization, oxidation and nitridation at high-temperature. Different classes of materials (low-Cr ferritic steels, austenitic steels and Ni-base superalloys) were exposed at temperatures between 550 ºC and 1000 ºC to different corrosive atmospheres (carburizing, oxidizing and nitriding). The tool for the prediction of internal/inwards corrosion processes at high-temperatures makes use of the numerical finite-difference technique to treat diffusional kinetics on the one hand and the concept of local equilibrium thermodynamics on the other hand. For this purpose, a link has been established between the numerical environment of MATLAB and the thermodynamic library ChemApp. Using this new tool, the kinetics of nitridation, oxidation and carburization processes were predicted numerically taking the materials microstructure into consideration by distinguishing between precipitation along the grain boundaries and within the grain interior. Excellent agreement between experimental observations and simulation results revealed the high potential of the computer modeling for application to complex corrosion processes. |
id |
SBQ-2_2bb175170f9895035efddd0efd2fda34 |
---|---|
oai_identifier_str |
oai:scielo:S0103-50532008000100022 |
network_acronym_str |
SBQ-2 |
network_name_str |
Journal of the Brazilian Chemical Society (Online) |
repository_id_str |
|
spelling |
Computer-based simulation of high-temperature corrosion phenomenathermodynamics and diffusion simulationoxidationnitridationcarburizationfinite-difference methodThe aim of this paper is to introduce a computer simulation tool, which is designed for prediction of service-life of components operating under corrosive conditions such as carburization, oxidation and nitridation at high-temperature. Different classes of materials (low-Cr ferritic steels, austenitic steels and Ni-base superalloys) were exposed at temperatures between 550 ºC and 1000 ºC to different corrosive atmospheres (carburizing, oxidizing and nitriding). The tool for the prediction of internal/inwards corrosion processes at high-temperatures makes use of the numerical finite-difference technique to treat diffusional kinetics on the one hand and the concept of local equilibrium thermodynamics on the other hand. For this purpose, a link has been established between the numerical environment of MATLAB and the thermodynamic library ChemApp. Using this new tool, the kinetics of nitridation, oxidation and carburization processes were predicted numerically taking the materials microstructure into consideration by distinguishing between precipitation along the grain boundaries and within the grain interior. Excellent agreement between experimental observations and simulation results revealed the high potential of the computer modeling for application to complex corrosion processes.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000100022Journal of the Brazilian Chemical Society v.19 n.1 2008reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532008000100022info:eu-repo/semantics/openAccessTrindade,Vicente BrazKrupp,UlrichChrist,Hans-Jürgeneng2008-03-10T00:00:00Zoai:scielo:S0103-50532008000100022Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2008-03-10T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Computer-based simulation of high-temperature corrosion phenomena |
title |
Computer-based simulation of high-temperature corrosion phenomena |
spellingShingle |
Computer-based simulation of high-temperature corrosion phenomena Trindade,Vicente Braz thermodynamics and diffusion simulation oxidation nitridation carburization finite-difference method |
title_short |
Computer-based simulation of high-temperature corrosion phenomena |
title_full |
Computer-based simulation of high-temperature corrosion phenomena |
title_fullStr |
Computer-based simulation of high-temperature corrosion phenomena |
title_full_unstemmed |
Computer-based simulation of high-temperature corrosion phenomena |
title_sort |
Computer-based simulation of high-temperature corrosion phenomena |
author |
Trindade,Vicente Braz |
author_facet |
Trindade,Vicente Braz Krupp,Ulrich Christ,Hans-Jürgen |
author_role |
author |
author2 |
Krupp,Ulrich Christ,Hans-Jürgen |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Trindade,Vicente Braz Krupp,Ulrich Christ,Hans-Jürgen |
dc.subject.por.fl_str_mv |
thermodynamics and diffusion simulation oxidation nitridation carburization finite-difference method |
topic |
thermodynamics and diffusion simulation oxidation nitridation carburization finite-difference method |
description |
The aim of this paper is to introduce a computer simulation tool, which is designed for prediction of service-life of components operating under corrosive conditions such as carburization, oxidation and nitridation at high-temperature. Different classes of materials (low-Cr ferritic steels, austenitic steels and Ni-base superalloys) were exposed at temperatures between 550 ºC and 1000 ºC to different corrosive atmospheres (carburizing, oxidizing and nitriding). The tool for the prediction of internal/inwards corrosion processes at high-temperatures makes use of the numerical finite-difference technique to treat diffusional kinetics on the one hand and the concept of local equilibrium thermodynamics on the other hand. For this purpose, a link has been established between the numerical environment of MATLAB and the thermodynamic library ChemApp. Using this new tool, the kinetics of nitridation, oxidation and carburization processes were predicted numerically taking the materials microstructure into consideration by distinguishing between precipitation along the grain boundaries and within the grain interior. Excellent agreement between experimental observations and simulation results revealed the high potential of the computer modeling for application to complex corrosion processes. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-01-01 |
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=S0103-50532008000100022 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532008000100022 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532008000100022 |
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 |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.19 n.1 2008 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318168591564800 |