Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista soldagem & inspeção (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242013000400007 |
Resumo: | Advanced ceramic is usually joined to metal by the well-known direct brazing process, where costly active filler alloys can be considered a limitation. Brazing using active-metal-free filler alloy as insert between the joint components is an attempt to overcome it. The active metal diffusion from the titanium member through the bulk of molten filler to the ceramic was responsible to produce an active filler alloy in loco and promote reduction of the zirconium oxide to improve wetting on the ceramic surface. Unalloyed titanium was joined in a high-vacuum furnace (<3x10-5 mbar) to yttria-tetragonal zirconia polycristals (Y-TZP) and zirconia partially stabilized with magnesia (Mg-PSZ), where commercial fillers Ag-28Cu and Au-18Ni with respective thermal cycles were evaluated. Helium gas leak detection test was performed at the ceramic/metal interface at room temperature; samples from reliable vacuum tight joints were examined by microstructural analysis techniques and energy dispersive X-ray analysis at the joint cross-section. Tight joints were produced with eutectic Ag-Cu filler, revealing an intermetallic layer and a dark reaction layer near the ceramic surface; titanium diffusion was efficient for superficial chemical interactions between individual components. Brazing joints were also tested using three-point flexure testing. |
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Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloysBrazingZirconiaTitaniumCeramic/metal joiningAdvanced ceramic is usually joined to metal by the well-known direct brazing process, where costly active filler alloys can be considered a limitation. Brazing using active-metal-free filler alloy as insert between the joint components is an attempt to overcome it. The active metal diffusion from the titanium member through the bulk of molten filler to the ceramic was responsible to produce an active filler alloy in loco and promote reduction of the zirconium oxide to improve wetting on the ceramic surface. Unalloyed titanium was joined in a high-vacuum furnace (<3x10-5 mbar) to yttria-tetragonal zirconia polycristals (Y-TZP) and zirconia partially stabilized with magnesia (Mg-PSZ), where commercial fillers Ag-28Cu and Au-18Ni with respective thermal cycles were evaluated. Helium gas leak detection test was performed at the ceramic/metal interface at room temperature; samples from reliable vacuum tight joints were examined by microstructural analysis techniques and energy dispersive X-ray analysis at the joint cross-section. Tight joints were produced with eutectic Ag-Cu filler, revealing an intermetallic layer and a dark reaction layer near the ceramic surface; titanium diffusion was efficient for superficial chemical interactions between individual components. Brazing joints were also tested using three-point flexure testing.Associação Brasileira de Soldagem2013-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242013000400007Soldagem & Inspeção v.18 n.4 2013reponame:Revista soldagem & inspeção (Online)instname:Associação Brasileira de Soldagem (ABS)instacron:ABS10.1590/S0104-92242013000400007info:eu-repo/semantics/openAccessPimenta,Jean S.Buschinelli,Augusto J. A.Nascimento,Rubens M. doMartinelli,Augusto E.Remmel,Josepheng2013-12-13T00:00:00Zoai:scielo:S0104-92242013000400007Revistahttp://abs-soldagem.org.br/s&i/https://old.scielo.br/oai/scielo-oai.php||revista-si@abs-soldagem.org.br0104-92241980-6973opendoar:2013-12-13T00:00Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)false |
dc.title.none.fl_str_mv |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
title |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
spellingShingle |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys Pimenta,Jean S. Brazing Zirconia Titanium Ceramic/metal joining |
title_short |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
title_full |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
title_fullStr |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
title_full_unstemmed |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
title_sort |
Brazing of zirconia to titanium using Ag-Cu and Au-Ni filler alloys |
author |
Pimenta,Jean S. |
author_facet |
Pimenta,Jean S. Buschinelli,Augusto J. A. Nascimento,Rubens M. do Martinelli,Augusto E. Remmel,Joseph |
author_role |
author |
author2 |
Buschinelli,Augusto J. A. Nascimento,Rubens M. do Martinelli,Augusto E. Remmel,Joseph |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Pimenta,Jean S. Buschinelli,Augusto J. A. Nascimento,Rubens M. do Martinelli,Augusto E. Remmel,Joseph |
dc.subject.por.fl_str_mv |
Brazing Zirconia Titanium Ceramic/metal joining |
topic |
Brazing Zirconia Titanium Ceramic/metal joining |
description |
Advanced ceramic is usually joined to metal by the well-known direct brazing process, where costly active filler alloys can be considered a limitation. Brazing using active-metal-free filler alloy as insert between the joint components is an attempt to overcome it. The active metal diffusion from the titanium member through the bulk of molten filler to the ceramic was responsible to produce an active filler alloy in loco and promote reduction of the zirconium oxide to improve wetting on the ceramic surface. Unalloyed titanium was joined in a high-vacuum furnace (<3x10-5 mbar) to yttria-tetragonal zirconia polycristals (Y-TZP) and zirconia partially stabilized with magnesia (Mg-PSZ), where commercial fillers Ag-28Cu and Au-18Ni with respective thermal cycles were evaluated. Helium gas leak detection test was performed at the ceramic/metal interface at room temperature; samples from reliable vacuum tight joints were examined by microstructural analysis techniques and energy dispersive X-ray analysis at the joint cross-section. Tight joints were produced with eutectic Ag-Cu filler, revealing an intermetallic layer and a dark reaction layer near the ceramic surface; titanium diffusion was efficient for superficial chemical interactions between individual components. Brazing joints were also tested using three-point flexure testing. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-12-01 |
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=S0104-92242013000400007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242013000400007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-92242013000400007 |
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 |
Associação Brasileira de Soldagem |
publisher.none.fl_str_mv |
Associação Brasileira de Soldagem |
dc.source.none.fl_str_mv |
Soldagem & Inspeção v.18 n.4 2013 reponame:Revista soldagem & inspeção (Online) instname:Associação Brasileira de Soldagem (ABS) instacron:ABS |
instname_str |
Associação Brasileira de Soldagem (ABS) |
instacron_str |
ABS |
institution |
ABS |
reponame_str |
Revista soldagem & inspeção (Online) |
collection |
Revista soldagem & inspeção (Online) |
repository.name.fl_str_mv |
Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS) |
repository.mail.fl_str_mv |
||revista-si@abs-soldagem.org.br |
_version_ |
1754213003132141568 |