Simultaneous Spark Plasma Sintering of Multiple Complex Shapes
This work addresses the two great challenges of the spark plasma sintering (SPS) process: The sintering of complex shapes and the simultaneous production of multiple parts. A new controllable interface method is employed to concurrently consolidate two nickel gear shapes by SPS. A graphite deformabl...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416649/ https://www.ncbi.nlm.nih.gov/pubmed/30781753 http://dx.doi.org/10.3390/ma12040557 |
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author | Manière, Charles Torresani, Elisa Olevsky, Eugene A. |
author_facet | Manière, Charles Torresani, Elisa Olevsky, Eugene A. |
author_sort | Manière, Charles |
collection | PubMed |
description | This work addresses the two great challenges of the spark plasma sintering (SPS) process: The sintering of complex shapes and the simultaneous production of multiple parts. A new controllable interface method is employed to concurrently consolidate two nickel gear shapes by SPS. A graphite deformable sub-mold is specifically designed for the mutual densification of both complex parts in a unique 40 mm powder deformation space. An energy efficient SPS configuration is developed to allow the sintering of a large-scale powder assembly under electric current lower than 900 A. The stability of the developed process is studied by electro-thermal-mechanical (ETM) simulation. The ETM simulation reveals that homogeneous densification conditions can be attained by inserting an alumina powder at the sample/punches interfaces, enabling the energy efficient heating and the thermal confinement of the nickel powder. Finally, the feasibility of the fabrication of the two near net shape gears with a very homogeneous microstructure is demonstrated. |
format | Online Article Text |
id | pubmed-6416649 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64166492019-03-29 Simultaneous Spark Plasma Sintering of Multiple Complex Shapes Manière, Charles Torresani, Elisa Olevsky, Eugene A. Materials (Basel) Article This work addresses the two great challenges of the spark plasma sintering (SPS) process: The sintering of complex shapes and the simultaneous production of multiple parts. A new controllable interface method is employed to concurrently consolidate two nickel gear shapes by SPS. A graphite deformable sub-mold is specifically designed for the mutual densification of both complex parts in a unique 40 mm powder deformation space. An energy efficient SPS configuration is developed to allow the sintering of a large-scale powder assembly under electric current lower than 900 A. The stability of the developed process is studied by electro-thermal-mechanical (ETM) simulation. The ETM simulation reveals that homogeneous densification conditions can be attained by inserting an alumina powder at the sample/punches interfaces, enabling the energy efficient heating and the thermal confinement of the nickel powder. Finally, the feasibility of the fabrication of the two near net shape gears with a very homogeneous microstructure is demonstrated. MDPI 2019-02-13 /pmc/articles/PMC6416649/ /pubmed/30781753 http://dx.doi.org/10.3390/ma12040557 Text en © 2019 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Manière, Charles Torresani, Elisa Olevsky, Eugene A. Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title | Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title_full | Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title_fullStr | Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title_full_unstemmed | Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title_short | Simultaneous Spark Plasma Sintering of Multiple Complex Shapes |
title_sort | simultaneous spark plasma sintering of multiple complex shapes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416649/ https://www.ncbi.nlm.nih.gov/pubmed/30781753 http://dx.doi.org/10.3390/ma12040557 |
work_keys_str_mv | AT manierecharles simultaneoussparkplasmasinteringofmultiplecomplexshapes AT torresanielisa simultaneoussparkplasmasinteringofmultiplecomplexshapes AT olevskyeugenea simultaneoussparkplasmasinteringofmultiplecomplexshapes |