Finite element modeling of spark plasma sintering: Application to the reduction of temperature inhomogeneities, case of alumina

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• 作者：Youssef Achenani^a ; ^{achenaniyoussef@yahoo.fr} ; Malika Saâ ; daoui^a ; ^{saadaoui@emi.ac.ma} ; Abdelkhalek Cheddadi^a ; Guillaume Bonnefont^b ; Gilbert Fantozzi^b
• 关键词：Spark plasma sintering ; Finite element modeling ; Temperature distribution ; Die location ; Die insulation
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：116
• 期：Complete
• 页码：504-514
• 全文大小：2132 K
• 卷排序：116

文摘

Using a faithful finite element modeling of SPS sintering, a simple method to reduce the temperature heterogeneities in non-conductive materials is proposed. It is shown that a partial thermal insulation of the die is more effective to reduce the radial temperature gradient than the commonly used total insulation. A controlled displacement of the die reduces the axial temperature gradient. Combining a controlled die shift with an optimized partial thermal insulation allows to minimize the temperature heterogeneities in the sample.