Chapter 72. Processtng and Mechanical Properties of Silicon Nitride Formed by Robocasting Aqueous Slurries

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Guoping He1,
  2. Deidre A. Hirschfeld1 and
  3. Joseph Cesarano III2

Published Online: 28 MAR 2008

DOI: 10.1002/9780470294635.ch72

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4

How to Cite

He, G., Hirschfeld, D. A. and Cesarano, J. (2000) Processtng and Mechanical Properties of Silicon Nitride Formed by Robocasting Aqueous Slurries, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 21, Issue 4 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294635.ch72

Author Information

  1. 1

    Department of Materials and Metallurgical Engineering New Mexico Institute of Mining and Technology Socorro, NM 87801

  2. 2

    Sandia National Laboratories Albuquerque, NM 87185–1349

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375693

Online ISBN: 9780470294635

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Keywords:

  • fieeform fabrication technique;
  • optimization;
  • silicon nitride ceramics;
  • colloidal processing;
  • computer aided design

Summary

Robocasting is a new fieeform fabrication technique for dense ceramics. It uses robotics to control deposition of ceramic slurries through an orifice. The optimization of concentrated aqueous Si3N4 slurry properties to achieve high green density robocast bodies and subsequent high sintered densities was investigated. The effects of pH, electrolyte, additives and solids loading on the dispersion and rheological properties of Si3N4 slurries were determined. The mechanical behavior of sintered robocast bars was determined and compared to conventionally produced silicon nitride ceramics.