Freeform Fabrication of Ceramics via Stereolithography

Abstract

Ceramic green bodies can be created using stereolithography methods where a ceramic suspension consisting of 0.40–0.55 volume fraction ceramic powder is dispersed within an ultraviolet‐curable solution. Three ceramic materials were investigated: silica for investment casting purposes, and alumina and silicon nitride for structural parts. After mixing the powders in the curable solution, the ceramic suspension is photocured, layer by layer, fabricating a three‐dimensional ceramic green body. Subsequent binder removal results in a sintered ceramic part. Three‐dimensional objects have been fabricated from a 0.50 volume fraction silica suspension.

Colloidal Processing of Ceramics

“…48 -50 Solid freeform fabrication (SFF) of ceramics is a novel method for producing complex components with locally controlled composition and structure. Several SFF techniques have been developed, including three-dimensional printing (3DP), 51 robocasting, 52 stereolithography, 53 computer-aided manufacturing of laminated engineering materials (CAM-LEM), 54 and fused deposition. 55 Some routes 51,52 rely on the colloidal approach to produce feedstock with the desired rheological and consolidation behavior, while others [53][54][55] require high organic loading.…”

Prototipagem rápida de pilhas a combustível de óxido sólido

“…Algumas pesquisas apontam para a possibilidade de fabricação de peças reforçadas com fibras de carbono [2]. Adicionalmente, pós cerâmicos podem ser adicionados a resinas curável em UV, de modo a formar uma peça a verde, posteriormente tratada termicamente para eliminação da resina e sinterização da peça [10][11][12].…”

Caracterización microscópica de texturas superficiales fabricadas aditivamente mediante estereolitografía láser

“…Existen principalmente dos tipos de impresoras 3D, la que utiliza repetidamente un proceso de adición de material con bajo punto de fusión, como en el caso del modelado por deposición fundida (FDM) [8], y la estereolitografía (SLA) [9]- [11] que utiliza resina curable por radiación ultravioleta (UV) [12]- [14]. Algunos de los procesos de estereolitografía han utilizado resina curable por UV con materiales en polvo de cerámica dispersos [15]- [18]. En la actualidad la gama de materiales utilizados en AM es bastante limitado, mientras que hay PP: 37-47…”