The European Ceramic Society


May 26, 2020

On-demand rapid processing of complex-shaped ceramics by Hugo Curto

YCN Newsletter - May 2020

The development of additive manufacturing (AM) since the last decades enthusiastically increase the potentiality of these technologies. AM of ceramics is now reaching industrialization thanks to its advantages such as high precision, the versatility of the processed pieces, quick processing time and so on. Moreover, AM technologies like stereolithography (SLA) are referred as indirect technologies because the produced parts must be thermally debinded and sintered. These thermal steps are usually involving long processing time. To overcome this limitation and to make possible the quick processing of ceramics, we propose to microwave sinter the pieces. Microwave sintering (MWS) is one of the rapid sintering technologies available. Unlike Spark Plasma Sintering and Flash Sintering, the main advantage of MWS is the geometry-restriction free set-up, which is compatible with complex-shaped parts sintering. When I joined the LMCPA (Laboratoire des Matériaux Céramiques et Procédés Associés) to begin my Ph.D., preliminary experiments already highlighted that the MWS of hydroxyapatite shaped by SLA was feasible and exhibited similar mechanical properties than conventional sintering. We focused our researches on alumina, zirconia, and composites made of alumina-zirconia to increase the potential of this coupling on biomaterials. The results are impressive; we are now able to process on-demand complex-shaped ceramics in a few hours while maintaining the mechanical properties in comparison with conventional sintering. Nevertheless, debinding is still a tricky step of the process, especially during microwave heating, but improvement is expected by precise monitoring and control of the temperature.

Financial support: FEDER Interreg “Tech2Fab”

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Next deadline for the JECS Trust mobility Grant is 31st August 2024!

Please note that the decisions of the JECS Trust board will not be known before Mid-October 2024 and so the project submitted must not begin before mid-November 2024.

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2024 ECerS International Ceramist Student Exchange Program – 3rd call!

In the frame of the 2024 ECerS International Student exchange program, ECerS is opening a third call, this time to allow grants to European Students to attend the 2024 Fall meeting of Korean Ceramic Society (COEX) that will be organised by the Korean Ceramic Society in Seoul, Korea, from 16th to 18th October 2024.


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