Process and Materials Development for Functionalized Printing in Three Dimensions (FP-3D)

Wolfgang Kollenberg, Dominik Polsakiewicz

Hochschule Bonn-Rhein-Sieg, 53359 Rheinbach

Revision 11.10.2011, 24.10.2011

Volume 4, Issue 1, Pages 151 - 158

Abstract

The paper presents the development pathway for the generation of ceramic parts with locally changed materials compositions. Focussing on the issues of ink preparation and characterization, the local doping of ceramic powder through printing in former publications hence establishing valuable building blocks in process development, this paper focusses on particle filled ink printing and powder selection for the process. The Ohnesorge number is confirmed as a good indicator for ink printability, but final printing settings also have to be verified by direct observation of the drop formation process before fabrication. Powder investigations revealed that particle packing models for coarse powders are not valid for fine powders used here and desired for the process. But without embedding the process into powder analysis, final conclusions do not seem possible. Hence, the development of suitable methods for this particular question is the focus of present and future research.

Keywords

3D-printing, alumina, generative manufacturing

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