Publications in Scientific Journals:

J. Homa, S. Zellhofer, J. Stampfl:
"Solid free form fabrication of silicon carbide cross flow filters";
Journal of Ceramic Processing Research, 10 (2009), 1; 25 - 32.

English abstract:
The paper presents a way to fabricate design prototypes for ceramic diesel particulate cross flow filters by a solid free form
fabrication process. Due to the strong undercuts of the structure fugitive wax molds have to be used. The wax mold, which
is either produced by rapid prototyping or by stacking milled wax layers, is filled with a ceramic slurry. Gelcasting, a ceramic
forming technique for complex shapes, was used in combination with the fugitive wax molds to produce monolithic cross flow
diesel particulate filters (DPF). The gelcast cross flow filters have dimensions from 20 × 30 × 28 mm³ to 90 × 90 × 40 mm³ and
wall thickness from 0.4 to 1 mm. The material used is recrystallized silicon carbide (RSiC), because it has an inherent porosity,
good thermal shock resistance and a non-shrinking sintering behavior. Furthermore the binder removal and the sintering are

Gelcasting, DPF, RSiC, Ceramics, Rapid Prototyping

Electronic version of the publication:

Related Projects:
Project Head Jürgen Stampfl:
Rapid Prototyping zellularer Keramiken

Created from the Publication Database of the Vienna University of Technology.