期刊
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
卷 36, 期 3, 页码 741-748出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2015.10.033
关键词
Spark-plasma-sintering; Electrical and thermal contact; Papyex; Finite element method
资金
- Plateforme Nationale CNRS de Frittage Flash (PNF2/CNRS)
- French National Research Agency (ANR) [ANR09 MAPR-007 Impulse]
Spark plasma sintering (SPS) is a breakthrough process for powder consolidation assisted by pulsed current and uniaxial pressure. In order to model the temperature variations of the tools during a SPS cycle, the Graphite-Papyex-Graphite contact phenomena are studied experimentally and modeled by finite element calculations. Compared to conducting materials, the thermo graphic image of an insulating sample (alumina) shows strongly localized heating along the Papyex implying contact effects are predominant. The aim of this modeling study is to determine the main contact phenomena due to Papyex. It is based on numerous experimental data and studies the case of alumina sintering. Finally the contact model is confronted to experimental thermal images. (C) 2015 Elsevier Ltd. All rights reserved.
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