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Contact resistances in spark plasma sintering: From in-situ and ex-situ determinations to an extended model for the scale up of the process

Manière, Charles and Durand, Lise and Brisson, Elodie and Desplats, Henri and Carré, Patrick and Rogeon, Philippe and Estournès, Claude Contact resistances in spark plasma sintering: From in-situ and ex-situ determinations to an extended model for the scale up of the process. (2017) Journal of the European Ceramic Society, 37 (4). 1593-1605. ISSN 0955-2219

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Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2016.12.010

Abstract

tHeating in spark plasma sintering is a key point of this manufacturing process that requires advancedsimulation to predict the thermal gradients present during the process and adjust them. Electric andthermal contact resistances have a prominent role in these gradients. Their determination is difficult asthey vary with pressure and temperature. A calibration method is used to determine all of the contactresistances present within tools of different sizes. Ex situ measurements were also performed to validatethe results of the in-situ calibrations. An extended predictive and scalable contacts model was developedand reveals the great importance and diversity of the contact resistances responsible for the generalheating of the column and high thermal gradients between the parts. The ex/in situ comparison highlightsa high lateral thermal contact resistance and the presence of a possible phenomenon of electric currentfacilitation across the lateral interface for the high temperatures.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF of the article can be found at: http://www.sciencedirect.com/science/article/pii/S0955221916306628
HAL Id:hal-01537962
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université de Bretagne Sud - UBS (FRANCE)
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Funders:
ANR
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Deposited By: cirimat webmestre
Deposited On:13 Jun 2017 09:11

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