Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel

Detalhes bibliográficos
Autor(a) principal: Nascimento, Rubens Maribondo do
Data de Publicação: 2005
Outros Autores: Martinelli, Antonio Eduardo, Buschinelli, Augusto José de Almeida, Reisgen, Uwe, Remmel, Josef
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/31278
Resumo: Brazing has been increasingly used to join metals to advanced ceramics. Brazing covalent materials requires either the use of active filler alloys or the previous metallization of the surface. To that end, a new and simple mechanical technique has been applied to metallize advanced ceramics, thus avoiding the use of costly Ti-based active filler alloys. The mechanical metallization of Si3N4 with Ti was employed as an alternative route to deposit active metallic films prior to brazing with stainless steel using 72% Ag--28% Cu or 82% Au—18% Ni eutectic alloys. The brazing temperatures were set to 40°C or 75°C above the eutectic temperature of each filler alloy. Ti-films of average thickness 4 μm produced adequate spreading of both filler alloys onto Si3N4 substrates, which were subsequently brazed to stainless steel. The interface of Si3N4/310 stainless steel basically consisted of a reaction layer, a precipitation zone and an eutectic microconstituent. Mechanically sound and vacuum-tight joints were obtained, especially upon brazing at relatively lower temperatures. Increasing the brazing temperature resulted in thermal cracking of the Si3N4, possibly due to increased thermal stress
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spelling Nascimento, Rubens Maribondo doMartinelli, Antonio EduardoBuschinelli, Augusto José de AlmeidaReisgen, UweRemmel, Josef2021-01-19T17:28:23Z2021-01-19T17:28:23Z2005-09NASCIMENTO, Rubens Maribondo do; MARTINELLI, Antonio Eduardo; BUSCHINELLI, Augusto José de Almeida; REISGEN, Uwe; REMMEL, Josef. Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel. Journal of Materials Science, [S.L.], v. 40, n. 17, p. 4549-4556, set. 2005. Disponível em: https://link.springer.com/article/10.1007/s10853-005-0920-4. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1007/s10853-005-0920-4.0022-24611573-4803https://repositorio.ufrn.br/handle/123456789/3127810.1007/s10853-005-0920-4SpringerAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessAverage ThicknessAlternative RouteMicrostructureStainless SteelThermal StressMicrostructure of brazed joints between mechanically metallized Si3N4 and stainless steelinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleBrazing has been increasingly used to join metals to advanced ceramics. Brazing covalent materials requires either the use of active filler alloys or the previous metallization of the surface. To that end, a new and simple mechanical technique has been applied to metallize advanced ceramics, thus avoiding the use of costly Ti-based active filler alloys. The mechanical metallization of Si3N4 with Ti was employed as an alternative route to deposit active metallic films prior to brazing with stainless steel using 72% Ag--28% Cu or 82% Au—18% Ni eutectic alloys. The brazing temperatures were set to 40°C or 75°C above the eutectic temperature of each filler alloy. Ti-films of average thickness 4 μm produced adequate spreading of both filler alloys onto Si3N4 substrates, which were subsequently brazed to stainless steel. The interface of Si3N4/310 stainless steel basically consisted of a reaction layer, a precipitation zone and an eutectic microconstituent. Mechanically sound and vacuum-tight joints were obtained, especially upon brazing at relatively lower temperatures. 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dc.title.pt_BR.fl_str_mv Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
title Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
spellingShingle Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
Nascimento, Rubens Maribondo do
Average Thickness
Alternative Route
Microstructure
Stainless Steel
Thermal Stress
title_short Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
title_full Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
title_fullStr Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
title_full_unstemmed Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
title_sort Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel
author Nascimento, Rubens Maribondo do
author_facet Nascimento, Rubens Maribondo do
Martinelli, Antonio Eduardo
Buschinelli, Augusto José de Almeida
Reisgen, Uwe
Remmel, Josef
author_role author
author2 Martinelli, Antonio Eduardo
Buschinelli, Augusto José de Almeida
Reisgen, Uwe
Remmel, Josef
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Nascimento, Rubens Maribondo do
Martinelli, Antonio Eduardo
Buschinelli, Augusto José de Almeida
Reisgen, Uwe
Remmel, Josef
dc.subject.por.fl_str_mv Average Thickness
Alternative Route
Microstructure
Stainless Steel
Thermal Stress
topic Average Thickness
Alternative Route
Microstructure
Stainless Steel
Thermal Stress
description Brazing has been increasingly used to join metals to advanced ceramics. Brazing covalent materials requires either the use of active filler alloys or the previous metallization of the surface. To that end, a new and simple mechanical technique has been applied to metallize advanced ceramics, thus avoiding the use of costly Ti-based active filler alloys. The mechanical metallization of Si3N4 with Ti was employed as an alternative route to deposit active metallic films prior to brazing with stainless steel using 72% Ag--28% Cu or 82% Au—18% Ni eutectic alloys. The brazing temperatures were set to 40°C or 75°C above the eutectic temperature of each filler alloy. Ti-films of average thickness 4 μm produced adequate spreading of both filler alloys onto Si3N4 substrates, which were subsequently brazed to stainless steel. The interface of Si3N4/310 stainless steel basically consisted of a reaction layer, a precipitation zone and an eutectic microconstituent. Mechanically sound and vacuum-tight joints were obtained, especially upon brazing at relatively lower temperatures. Increasing the brazing temperature resulted in thermal cracking of the Si3N4, possibly due to increased thermal stress
publishDate 2005
dc.date.issued.fl_str_mv 2005-09
dc.date.accessioned.fl_str_mv 2021-01-19T17:28:23Z
dc.date.available.fl_str_mv 2021-01-19T17:28:23Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.citation.fl_str_mv NASCIMENTO, Rubens Maribondo do; MARTINELLI, Antonio Eduardo; BUSCHINELLI, Augusto José de Almeida; REISGEN, Uwe; REMMEL, Josef. Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel. Journal of Materials Science, [S.L.], v. 40, n. 17, p. 4549-4556, set. 2005. Disponível em: https://link.springer.com/article/10.1007/s10853-005-0920-4. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1007/s10853-005-0920-4.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/31278
dc.identifier.issn.none.fl_str_mv 0022-2461
1573-4803
dc.identifier.doi.none.fl_str_mv 10.1007/s10853-005-0920-4
identifier_str_mv NASCIMENTO, Rubens Maribondo do; MARTINELLI, Antonio Eduardo; BUSCHINELLI, Augusto José de Almeida; REISGEN, Uwe; REMMEL, Josef. Microstructure of brazed joints between mechanically metallized Si3N4 and stainless steel. Journal of Materials Science, [S.L.], v. 40, n. 17, p. 4549-4556, set. 2005. Disponível em: https://link.springer.com/article/10.1007/s10853-005-0920-4. Acesso em: 24 nov. 2020. http://dx.doi.org/10.1007/s10853-005-0920-4.
0022-2461
1573-4803
10.1007/s10853-005-0920-4
url https://repositorio.ufrn.br/handle/123456789/31278
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http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
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dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
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