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ADDITIVE MANUFACTURING PROCESS FOR PRODUCING CERAMIC ARTICLES USING A SOL CONTAINING NANO-SIZED PARTICLES

The present invention relates to a process for producing a ceramic article, the process comprising the steps of providing a printing sol, the printing sol comprising solvent, nano-sized particles, radiation curable monomer(s) and photoinitiator, the printing sol having a viscosity of less than 500 mPa*s at 23 C., processing the printing sol as construction material in an additive manufacturing process to obtain a 3-dim article being in a gel state, the 3-dim article having a Volume A, transferring the 3-dim article being in a gel state to a 3-dim article being in an aerogel state, heat treating the 3-dim article to obtain a sintered 3-dim ceramic article, the ceramic article having a Volume F, Volume A of the 3-dim article in a gel state being more than 500% of Volume F of the ceramic article in its sintered state. The invention also relates to a ceramic article obtainable according to such a process. The ceramic article can have the shape of a dental or orthodontic article.


» Number: US2018148378A1 (A1)

» Publication Date: 18//2/31/0

» Applicant: 3M INNOVATIVE PROPERTIES CO?[US]

» Inventor: MAYR HELMAR B?[DE]; KORTEN MALTE?[DE] (7)

» More Information

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This project has received funding from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreement n [310187].