An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Título da fonte: | Repositório Institucional do IPEN |
Texto Completo: | http://repositorio.ipen.br/handle/123456789/27308 |
Resumo: | The aim of this study is to analyze the formation and propagation of cracks, as well as the occurrence of thermal fatigue in SiC subjected to thermal shock. Samples were prepared with 90%SiC+10%(Y2O3:Al2O3) mole, in the proportions 1:3 and 1:4 of additives. The compacted samples were sintered at 1750 ??C, 1850 ??C and 1950 ??C in graphite resistive furnace. The thermal cycles were performed by heating at two different temperatures (600 ??C and 900 ??C) in a tubular furnace, and quenched in water. Analysis of cracks was performed by scanning electron microscopy on samples from flexural strength test after 1 and 50 thermal cycles, or after thermal fatigue. The sintering temperature and thermal cycle have a great influence on the formation and propagation of cracks. The samples sintered at 1950 ??C, despite having a significant number of cracks, are the only ones not introduce thermal fatigue to 900??C. |
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2017-03-24T10:53:03Z2017-03-24T10:53:03Z15-18 de maio, 2016http://repositorio.ipen.br/handle/123456789/27308The aim of this study is to analyze the formation and propagation of cracks, as well as the occurrence of thermal fatigue in SiC subjected to thermal shock. Samples were prepared with 90%SiC+10%(Y2O3:Al2O3) mole, in the proportions 1:3 and 1:4 of additives. The compacted samples were sintered at 1750 ??C, 1850 ??C and 1950 ??C in graphite resistive furnace. The thermal cycles were performed by heating at two different temperatures (600 ??C and 900 ??C) in a tubular furnace, and quenched in water. Analysis of cracks was performed by scanning electron microscopy on samples from flexural strength test after 1 and 50 thermal cycles, or after thermal fatigue. The sintering temperature and thermal cycle have a great influence on the formation and propagation of cracks. The samples sintered at 1950 ??C, despite having a significant number of cracks, are the only ones not introduce thermal fatigue to 900??C.Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2017-03-24T10:53:03Z No. of bitstreams: 1 23964.pdf: 2626025 bytes, checksum: fd27232f80bfd535fce502b72040a7aa (MD5)Made available in DSpace on 2017-03-24T10:53:03Z (GMT). No. of bitstreams: 1 23964.pdf: 2626025 bytes, checksum: fd27232f80bfd535fce502b72040a7aa (MD5)1165-1176An??lise de trincas causadas por choque t??rmico em carbeto de sil??cioAnalysis of cracks caused by thermal shock in carbide siliconinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCBCN??guas de Lind??ia, SPMELLO, R.M.BRESSIANI, A.H.A.CONGRESSO BRASILEIRO DE CERAMICA, 60.info:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN239642016MELLO, R.M.BRESSIANI, A.H.A.17-03Anais385096MELLO, R.M.:3850:-1:SBRESSIANI, A.H.A.:96:-1:NORIGINAL23964.pdf23964.pdfapplication/pdf2626025http://repositorio.ipen.br/bitstream/123456789/27308/1/23964.pdffd27232f80bfd535fce502b72040a7aaMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/27308/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/273082017-03-24 10:53:03.242oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102017-03-24T10:53:03Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false |
dc.title.pt_BR.fl_str_mv |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
dc.title.alternative.pt_BR.fl_str_mv |
Analysis of cracks caused by thermal shock in carbide silicon |
title |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
spellingShingle |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio MELLO, R.M. |
title_short |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
title_full |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
title_fullStr |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
title_full_unstemmed |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
title_sort |
An??lise de trincas causadas por choque t??rmico em carbeto de sil??cio |
author |
MELLO, R.M. |
author_facet |
MELLO, R.M. BRESSIANI, A.H.A. CONGRESSO BRASILEIRO DE CERAMICA, 60. |
author_role |
author |
author2 |
BRESSIANI, A.H.A. CONGRESSO BRASILEIRO DE CERAMICA, 60. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
MELLO, R.M. BRESSIANI, A.H.A. CONGRESSO BRASILEIRO DE CERAMICA, 60. |
description |
The aim of this study is to analyze the formation and propagation of cracks, as well as the occurrence of thermal fatigue in SiC subjected to thermal shock. Samples were prepared with 90%SiC+10%(Y2O3:Al2O3) mole, in the proportions 1:3 and 1:4 of additives. The compacted samples were sintered at 1750 ??C, 1850 ??C and 1950 ??C in graphite resistive furnace. The thermal cycles were performed by heating at two different temperatures (600 ??C and 900 ??C) in a tubular furnace, and quenched in water. Analysis of cracks was performed by scanning electron microscopy on samples from flexural strength test after 1 and 50 thermal cycles, or after thermal fatigue. The sintering temperature and thermal cycle have a great influence on the formation and propagation of cracks. The samples sintered at 1950 ??C, despite having a significant number of cracks, are the only ones not introduce thermal fatigue to 900??C. |
publishDate |
2017 |
dc.date.evento.pt_BR.fl_str_mv |
15-18 de maio, 2016 |
dc.date.accessioned.fl_str_mv |
2017-03-24T10:53:03Z |
dc.date.available.fl_str_mv |
2017-03-24T10:53:03Z |
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1165-1176 |
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