Rapid Prototyping of Complex-Shaped Parts of Si/SiC-Ceramics by Laser Sintering

  1. Prof. Dr. G. Müller
  1. Wolfgang Löschau1 and
  2. Reinhard Lenk2

Published Online: 27 APR 2006

DOI: 10.1002/3527607293.ch24

Ceramics - Processing, Reliability, Tribology and Wear, Volume 12

Ceramics - Processing, Reliability, Tribology and Wear, Volume 12

How to Cite

Löschau, W. and Lenk, R. (2000) Rapid Prototyping of Complex-Shaped Parts of Si/SiC-Ceramics by Laser Sintering, in Ceramics - Processing, Reliability, Tribology and Wear, Volume 12 (ed G. Müller), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607293.ch24

Editor Information

  1. Fraunhofer-Institut für Silicatforschung, Neunerplatz 2, 97082 Würzburg, Germany

Author Information

  1. 1

    Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS, Dresden, Germany

  2. 2

    Fraunhofer-Institut für Keramische Technologien und Sinterwerkstoffe IKTS, Dresden, Germany

Publication History

  1. Published Online: 27 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301942

Online ISBN: 9783527607297

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Keywords:

  • complex-shaped parts of Si/SiC-ceramics;
  • laser sintering

Summary

Results are presented on generating very complex parts and tools with undercuts, thin walls and internal voids by layer-wise selective laser sintering of pure SiC-powder without additives. The sintered parts are then infiltrated with Si in a vacuum furnace without distortions. The sintering process is brought about by the transient formation of different Si-base phases and by partial disintegration and interlocking of the SiC grains. The final porosity of the Si/SiC-parts is below 1%. Their mechanical and thermal properties (as density, bending strength, Young's modulus, thermal conductivity, thermal expansion coefficient) can be controlled via Si content. They are slightly below those of conventional Si/SiC-ceramics.

It is expected that by means of this technique, rigid light-weight mirrors and wear and temperature resistant dies and tools, for example, can be generated.