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Three Dimensional Printing: Surface Finish and Microstructure of Rapid Prototyped Components

Published online by Cambridge University Press:  25 February 2011

A. Lauder ,
M.J. Cima ,
E. Sachs  and
T. Fan
A. Lauder
Affiliation:
Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, Cambridge, MA 02139
M.J. Cima
Affiliation:
Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, Cambridge, MA 02139
E. Sachs
Affiliation:
Massachusetts Institute of Technology, Dept. of Mechanical Engineering, Cambridge, MA 02139
T. Fan
Affiliation:
Massachusetts Institute of Technology, Dept. of Mechanical Engineering, Cambridge, MA 02139
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Abstract

Three Dimensional Printing is a process for rapid prototyping of functional components. Thin layers of powder are bound in selected areas by ink-jet printing of a liquid binder. Layers are added sequentially until a three dimensional part is completed. The unbound powder is then removed. The raster scan pattern and layering used in forming has an observable effect on the surface finish and microstructure of the part, as does the chemistry of the particular materials system used. Important phenomena include ballistic interaction of the jet with the powder bed and wicking of the binder. Process parameters such as layer height, flow rate, and powder density were studied. Microstructural examination of the printed components is also reported.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 249: Symposium Q – Synthesis and Processing of Ceramics: Scientific Issues , 1991 , 331
Copyright
Copyright © Materials Research Society 1992

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References

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