3D printing of TPMS structural ZnO ceramics with good mechanical properties

Abstract

Abstract In this study, ZnO ceramics with two types of TPMS structure (Gyroid structure and Schwartz P structure) were fabricated by 3D printing. The solid content of ZnO ceramics powder was 38\xa0wt%. The solid content of SR454NS Acrylic was 57\xa0wt%. The other components of the slurry were photoinitiator, dispersant and sintering additive. The ZnO ceramics with high densification could be achieved after sintering at 1250\xa0°C for 2\xa0h. The average grain size was 37\xa0μm and the true density of the printed ZnO ceramics was 4.95\xa0g/cm3. The shape of printed ZnO ceramics can be controlled and the minimum size of thin rod is 200\xa0μm. The compressive strength for Gyroid structural ZnO ceramic with 55% porosity and the Schwartz P structural ZnO ceramic was approximately 6.87\xa0MPa and 4.02\xa0MPa, respectively. The result shows that the Gyroid structural ZnO ceramics can bear much more deformation than the Schwartz P structure during the compression tests. The TPMS structural ZnO ceramics can be used in the field of sensing and detection in the future.