Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints

Solid-state bonding of reactive systems, such as Si3N4–Mo often results in the formation of excessively thick intermetallic layers that can be detrimental to the final strength of the joint. The objective of this work was to study the microstructural evolution of Si3N4–Mo interfaces, aiming at maxim...

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Principais autores: Martinelli, Antonio Eduardo, Drew, Robin A.L.
Formato: article
Idioma:English
Publicado em: Elsevier
Assuntos:
Intermetallics
Si3N4
Diffusion
Interfaces
Joining
Endereço do item:https://repositorio.ufrn.br/handle/123456789/31473
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spelling ri-123456789-314732021-02-14T08:48:04Z Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints Martinelli, Antonio Eduardo Drew, Robin A.L. Intermetallics Si3N4 Diffusion Interfaces Joining Solid-state bonding of reactive systems, such as Si3N4–Mo often results in the formation of excessively thick intermetallic layers that can be detrimental to the final strength of the joint. The objective of this work was to study the microstructural evolution of Si3N4–Mo interfaces, aiming at maximum joint strength via a balance between the fraction of bonded material and the amount of interfacial reaction. Joining was carried out under vacuum or nitrogen atmosphere for temperatures between 1100 and 1800°C. Microstructural analyses of the interfaces revealed the presence of Mo3Si and Mo5Si3 along with residual pores. The results from shear strength tests revealed a strong relationship between the microstructure of the interface and the mechanical strength of the joint 2021-02-10T20:37:28Z 2021-02-10T20:37:28Z 1999-10 article MARTINELLI, A.E; DREW, R.A.L. Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints. Journal Of The European Ceramic Society, [S.L.], v. 19, n. 12, p. 2173-2181, out. 1999. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0955221999000278?via%3Dihub. Acesso em: 26 nov. 2020. http://dx.doi.org/10.1016/s0955-2219(99)00027-8. 0955-2219 https://repositorio.ufrn.br/handle/123456789/31473 10.1016/S0955-2219(99)00027-8 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf Elsevier
institution Repositório Institucional
collection RI - UFRN
language English
topic Intermetallics
Si3N4
Diffusion
Interfaces
Joining
spellingShingle Intermetallics
Si3N4
Diffusion
Interfaces
Joining
Martinelli, Antonio Eduardo
Drew, Robin A.L.
Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
description Solid-state bonding of reactive systems, such as Si3N4–Mo often results in the formation of excessively thick intermetallic layers that can be detrimental to the final strength of the joint. The objective of this work was to study the microstructural evolution of Si3N4–Mo interfaces, aiming at maximum joint strength via a balance between the fraction of bonded material and the amount of interfacial reaction. Joining was carried out under vacuum or nitrogen atmosphere for temperatures between 1100 and 1800°C. Microstructural analyses of the interfaces revealed the presence of Mo3Si and Mo5Si3 along with residual pores. The results from shear strength tests revealed a strong relationship between the microstructure of the interface and the mechanical strength of the joint
format article
author Martinelli, Antonio Eduardo
Drew, Robin A.L.
author_facet Martinelli, Antonio Eduardo
Drew, Robin A.L.
author_sort Martinelli, Antonio Eduardo
title Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
title_short Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
title_full Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
title_fullStr Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
title_full_unstemmed Microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
title_sort microstructure and mechanical strength of diffusion-bonded silicon nitride–molybdenum joints
publisher Elsevier
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/31473
work_keys_str_mv AT martinelliantonioeduardo microstructureandmechanicalstrengthofdiffusionbondedsiliconnitridemolybdenumjoints
AT drewrobinal microstructureandmechanicalstrengthofdiffusionbondedsiliconnitridemolybdenumjoints
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