Fabrication and characterisation of ceramics via low-cost DLP 3D printing

Boletín de la Sociedad Española de Cerámica y Vidrio

Juan Carlos Ruiz-Morales¹  Lorena Hernández-Afonso¹  Miguel Castro-García²  Juan Ramón Marín-Rueda²  Mónica Moral²  Giftymol Varghese²  Jesus Canales-Vázquez²  Juan José López-López³  Vicente Yagüe-Alcaraz³ 

[1] Dpto. Química, Facultad de Farmacia, Universidad de La Laguna, 38200 Tenerife, Spain;Instituto de Energías Renovables, Paseo de la Investigación 1, Universidad de Castilla-La Mancha, 02071 Albacete, Spain;Print3D Solutions, Paseo de la Investigación 1, 02071 Albacete, Spain;

关键词: Ceramics;    DLP 3D printing;    Photopolymerisation;    Photogrammetry;    Green body;   

DOI  :  10.1016/j.bsecv.2017.09.004

来源: DOAJ

【 摘 要 】

A stereolithography-based additive manufacturing technique has been used for the fabrication of advanced ceramics. A customised 3D printer using a Digital Light Processing (DLP) projector as UV source has been built to fabricate green bodies from photosensitive resins loaded with 25–60 wt% of alumina, 3- and 8-YSZ. The 3D-printed bodies were then sintered in the 1200–1500 °C and exhibited thermal stability. As expected, higher ceramic loadings rendered objects with higher density for a given sintering temperature. The limit of solid loading in the resin is approximately 60% and beyond those contents, the extra ceramic appears as powder loosely adhered to the sintered objects. Photogrammetry was used to evaluate the accuracy of the 3D printing process and highlighted a marked deviation between the CAD model and the resulting object, particularly in the top part of the specimens, possibly due to the use of volatile solvents which cause changes in the photoresins used. Nevertheless, that problem may be overcome by thermostatising the printer vat and/or using solvents with higher boiling point. The results obtained suggest the potential application of low cost DLP 3D printing techniques to process ceramics for a number of applications including ceramic fuel cells, piezoelectrics, dental applications, etc.

【 授权许可】

Unknown