SiCeram GmbH in cooperation with Spectrum Filaments have developed an innovative and innovative series of ceramic materials for 3D printing in FDM/FFF technology! Four specialized filaments are the first commercial solution of this type on the global market, allowing 3D printing of high-tech ceramic using typical desktop 3D printers.
3D-printing is a new additive forming technology for ceramic components. It will find its application mainly for fabrication of prototypes, small series or complex geometries, with internal hollow spaces e.g., which are not able to be produced by other, traditional techniques.
Alumina is a filament containing high purity alumina powder (99.7%). The use of appropriate organic agents as a binder allows to obtain a flexible filament that can be used in classic 3D printers operating in the FFF/FDM technology. The organics content of the filament amounts to ca. 19.5 mass-%.
Aluminum Oxide exhibits lower strength than SSiC und Si3N4. The strength at 1,000°C is ca. 60% lower than at room temperature. Al2O3 is an electrical insulator and a fairly good heat conductor (ca. 20 ? 30 W/mK). The corrosion resistance in the acidic range is good (pH < 7, but poor in the basic range (pH > 7). Due to the relatively high coefficient of linear thermal expansion (8.5*10-6K-1) the thermal shock resistance of a dense material is relatively poor, but it can be improved considerably by targeted incorporation of porosity.