Debinding of additively manufactured parts from spinel powders with particle sizes below 200 nm. Issue 7 (1st April 2023)

• Record Type: Journal Article
• Authors: Zubrzycka, Paulina; Radecka, Marta; Graule, Thomas; Stuer, Michael
• Is Part Of: Ceramics international. Volume 49:Issue 7(2023)
• Page Start: 11355
• Page End: 11367
• Publication Date: 2023-04-01
• Subjects: Ceramics additive manufacturing -- DLP -- MgAl2O4 -- Thermal debinding -- Nanopowder processing; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.11.335
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The widespread application of additive manufacturing in ceramics is still hindered by recurrent cracking issues during debinding. To date, the various strategies that have been attempted to reduce this problem often fail upon particle size reduction. Indeed, a reduction in particle size affects the diffusion rates (e.g. pore network) such that even slow heating rates and long dwell times during debinding may not prevent crack formation. In this study, the analysis of the curing and debinding behavior of magnesium aluminate spinel in different acrylates and one methacrylate was performed. Crack formation was analyzed by combining thermal effects with FTIR and dilatometry data. The strategy to reduce exothermal effects through the addition of propylene carbonate (i.e. non-reactive diluent) was evaluated.