Finite element analysis of the temperature uncertainty during spark plasma sintering: Influence of the experimental procedure. Issue 17 (1st December 2017)

• Record Type: Journal Article
• Authors: Achenani, Youssef; Saâdaoui, Malika; Cheddadi, Abdelkhalek; Fantozzi, Gilbert
• Is Part Of: Ceramics international. Volume 43:Issue 17(2017)
• Page Start: 15281
• Page End: 15287
• Publication Date: 2017-12-01
• Subjects: Spark plasma sintering -- Finite element modelling -- Temperature dispersion; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.08.067
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Finite element analysis of the dispersion of the dwell temperature during spark plasma sintering (SPS) was performed considering two error sources: misalignment of the axial pyrometer and a shift of the die relatively to the sample. Both error sources induce comparable temperature deviations. In the case of a pyrometer misalignment, these deviations are sensitive to the sample diameter. The errors have no significant effect on the radial temperature gradient within the sample; however, they modify the level of temperature which can be considerably deviated from the set point in the case of cumulative errors. Graphical abstract: Highlights: Temperature measurements during SPS sintering presented a noticeable dispersion. Misalignment of the axial pyrometer was identified as a potential error source. A shift of the die relatively to the sample is also a potential error source. A deviation of the sample temperature from the set point was induced. Cumulative errors amplify this deviation and induce significant axial gradients.