Sol-gel infiltration of complex cellular indirect 3D printed alumina

Journal article
(Original article)


Publication Details

Author(s): Stumpf M, Travitzky N, Greil P, Fey T
Journal: Journal of the European Ceramic Society
Publication year: 2018
Volume: 38
Journal issue: 10
Pages range: 3603-3609
ISSN: 0955-2219
eISSN: 1873-619X
Language: English


Abstract


Gelled aqueous solutions containing the soluble precursor aluminum chlorohydrate were developed for the infiltration of porous indirect 3D printed alumina. Viscosity and amplitude sweep tests confirmed the gel formation and sheer thinning behavior beneficial for the subsequent coating and infiltration process. High temperature XRD confirmed the formation of corundum at a temperature of 1000 °C. Complex alumina structures with high surface area and isotropic pore channels were achieved by indirect 3D printing. Coating and infiltration of the pre sintered alumina with a subsequent sintering step transformed the precursor to corundum and partially filled the residual porosity and decreased surface defects after 3D printing. With the gel coating a pronounced improvement up to a maximum value of δσcompr = 61.9 MPa was observed and with the gel infiltration a maximum improvement of δE = 136.2 GPa. The results show the possibility to infiltrate even complex alumina structures with aqueous alumina precursors without the need to disperse ceramic particles.


FAU Authors / FAU Editors

Fey, Tobias Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Greil, Peter Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Stumpf, Martin
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)
Travitzky, Nahum apl. Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Glas und Keramik)


How to cite

APA:
Stumpf, M., Travitzky, N., Greil, P., & Fey, T. (2018). Sol-gel infiltration of complex cellular indirect 3D printed alumina. Journal of the European Ceramic Society, 38(10), 3603-3609. https://dx.doi.org/10.1016/j.jeurceramsoc.2018.04.023

MLA:
Stumpf, Martin, et al. "Sol-gel infiltration of complex cellular indirect 3D printed alumina." Journal of the European Ceramic Society 38.10 (2018): 3603-3609.

BibTeX: 

Last updated on 2019-06-08 at 09:06

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