The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear

Detalhes bibliográficos
Autor(a) principal: Silva, R. F.
Data de Publicação: 1993
Outros Autores: Moreira, A. P., Gomes, J. R., Miranda, A. S., Vieira, J. M.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1765
Resumo: The hot hardness of Si3N4 tool materials of the CeO2 and CeO2-AIN doping systems, oxidation in air from 900 to 1450 °C, and turning of tool steel with ceramic inserts of the same compositions were investigated to determine the effect of the N content of the intergranular phase. Si/N grain boundary diffusion was found to be the main controlling mechanism at high temperature for densification, mechanical behavior and hemical degradation of these materials in air, the passivation oxidation rate of the CeO2-AIN-Si3N4 system being dependent on the atomic fraction of N of the intergranular phase, with lower values for the N-rich compositions.
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spelling The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wearScience & TechnologyThe hot hardness of Si3N4 tool materials of the CeO2 and CeO2-AIN doping systems, oxidation in air from 900 to 1450 °C, and turning of tool steel with ceramic inserts of the same compositions were investigated to determine the effect of the N content of the intergranular phase. Si/N grain boundary diffusion was found to be the main controlling mechanism at high temperature for densification, mechanical behavior and hemical degradation of these materials in air, the passivation oxidation rate of the CeO2-AIN-Si3N4 system being dependent on the atomic fraction of N of the intergranular phase, with lower values for the N-rich compositions.ElsevierUniversidade do MinhoSilva, R. F.Moreira, A. P.Gomes, J. R.Miranda, A. S.Vieira, J. M.19931993-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1765eng"Materials science & engineering A". ISSN 0921-5093. 168 (1993) 55-59.0921-509310.1016/0921-5093(93)90270-oinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:57:31Zoai:repositorium.sdum.uminho.pt:1822/1765Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:47:10.823937Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
title The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
spellingShingle The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
Silva, R. F.
Science & Technology
title_short The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
title_full The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
title_fullStr The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
title_full_unstemmed The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
title_sort The role of nitrogen in the intergranular glass phase of Si3N4 on high temperature aplications and wear
author Silva, R. F.
author_facet Silva, R. F.
Moreira, A. P.
Gomes, J. R.
Miranda, A. S.
Vieira, J. M.
author_role author
author2 Moreira, A. P.
Gomes, J. R.
Miranda, A. S.
Vieira, J. M.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Silva, R. F.
Moreira, A. P.
Gomes, J. R.
Miranda, A. S.
Vieira, J. M.
dc.subject.por.fl_str_mv Science & Technology
topic Science & Technology
description The hot hardness of Si3N4 tool materials of the CeO2 and CeO2-AIN doping systems, oxidation in air from 900 to 1450 °C, and turning of tool steel with ceramic inserts of the same compositions were investigated to determine the effect of the N content of the intergranular phase. Si/N grain boundary diffusion was found to be the main controlling mechanism at high temperature for densification, mechanical behavior and hemical degradation of these materials in air, the passivation oxidation rate of the CeO2-AIN-Si3N4 system being dependent on the atomic fraction of N of the intergranular phase, with lower values for the N-rich compositions.
publishDate 1993
dc.date.none.fl_str_mv 1993
1993-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/1765
url http://hdl.handle.net/1822/1765
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Materials science & engineering A". ISSN 0921-5093. 168 (1993) 55-59.
0921-5093
10.1016/0921-5093(93)90270-o
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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