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Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers

Diffusion bonding of Ti6Al4V to Al(2)O(3) using Ni/Ti reactive nanomultilayers as interlayer material was investigated. For this purpose, Ni/Ti multilayer thin films with 12, 25, and 60 nm modulation periods (bilayer thickness) were deposited by d.c. magnetron sputtering onto the base materials’ sur...

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Autores principales: Silva, Marcionilo, Ramos, Ana Sofia, Vieira, Maria Teresa, Simões, Sónia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8875220/
https://www.ncbi.nlm.nih.gov/pubmed/35215034
http://dx.doi.org/10.3390/nano12040706
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author Silva, Marcionilo
Ramos, Ana Sofia
Vieira, Maria Teresa
Simões, Sónia
author_facet Silva, Marcionilo
Ramos, Ana Sofia
Vieira, Maria Teresa
Simões, Sónia
author_sort Silva, Marcionilo
collection PubMed
description Diffusion bonding of Ti6Al4V to Al(2)O(3) using Ni/Ti reactive nanomultilayers as interlayer material was investigated. For this purpose, Ni/Ti multilayer thin films with 12, 25, and 60 nm modulation periods (bilayer thickness) were deposited by d.c. magnetron sputtering onto the base materials’ surface. The joints were processed at 750 and 800 °C with a dwell time of 60 min and under a pressure of 5 MPa. Microstructural characterization of the interfaces was conducted by scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS), and electron backscatter diffraction (EBSD). The mechanical characterization of the joints was performed by nanoindentation, and hardness and reduced Young’s modulus distribution maps were obtained across the interfaces. The joints processed at 800 °C using the three modulation periods were successful, showing the feasibility of using these nanolayered films to improve the diffusion bonding of dissimilar materials. Using modulation periods of 25 and 60 nm, it was also possible to reduce the bonding temperature to 750 °C and obtain a sound interface. The interfaces are mainly composed of NiTi and NiTi(2) phases. The nanoindentation experiments revealed that the hardness and reduced Young’s modulus at the interfaces reflect the observed microstructure.
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spelling pubmed-88752202022-02-26 Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers Silva, Marcionilo Ramos, Ana Sofia Vieira, Maria Teresa Simões, Sónia Nanomaterials (Basel) Article Diffusion bonding of Ti6Al4V to Al(2)O(3) using Ni/Ti reactive nanomultilayers as interlayer material was investigated. For this purpose, Ni/Ti multilayer thin films with 12, 25, and 60 nm modulation periods (bilayer thickness) were deposited by d.c. magnetron sputtering onto the base materials’ surface. The joints were processed at 750 and 800 °C with a dwell time of 60 min and under a pressure of 5 MPa. Microstructural characterization of the interfaces was conducted by scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDS), and electron backscatter diffraction (EBSD). The mechanical characterization of the joints was performed by nanoindentation, and hardness and reduced Young’s modulus distribution maps were obtained across the interfaces. The joints processed at 800 °C using the three modulation periods were successful, showing the feasibility of using these nanolayered films to improve the diffusion bonding of dissimilar materials. Using modulation periods of 25 and 60 nm, it was also possible to reduce the bonding temperature to 750 °C and obtain a sound interface. The interfaces are mainly composed of NiTi and NiTi(2) phases. The nanoindentation experiments revealed that the hardness and reduced Young’s modulus at the interfaces reflect the observed microstructure. MDPI 2022-02-21 /pmc/articles/PMC8875220/ /pubmed/35215034 http://dx.doi.org/10.3390/nano12040706 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Silva, Marcionilo
Ramos, Ana Sofia
Vieira, Maria Teresa
Simões, Sónia
Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title_full Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title_fullStr Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title_full_unstemmed Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title_short Joining of Ti6Al4V to Al(2)O(3) Using Nanomultilayers
title_sort joining of ti6al4v to al(2)o(3) using nanomultilayers
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8875220/
https://www.ncbi.nlm.nih.gov/pubmed/35215034
http://dx.doi.org/10.3390/nano12040706
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