Chapter 53. Fabrication and Properties of Si3, N4-TiN Composites

  1. John B. Wachtman Jr
  1. Shome N. Sinha1 and
  2. Terry N. Tiegs2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314715.ch53

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4

How to Cite

Sinha, S. N. and Tiegs, T. N. (1995) Fabrication and Properties of Si3, N4-TiN Composites, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 16, Issue 4 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314715.ch53

Author Information

  1. 1

    Civil Materials Engineering Dept. University of Illinois at Chicago Chicago, IL 60607

  2. 2

    Metal and Ceramics Division Oak Ridge National Laboratory Oak Ridge, TN 37831

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1995

ISBN Information

Print ISBN: 9780470375372

Online ISBN: 9780470314715

SEARCH

Keywords:

  • sintering;
  • resistivities;
  • microstructures;
  • compatibility;
  • graphite

Summary

Twelve electric discharge machinable composites, nine based on Si3N4-(30-50) wt% TIN with different combinations of sintering aids, Y2O3, Al2O, La2O3, and additives, 10 % SIC or TiC, SIALON-40 % TiN, and TIALON were fabricated by pressureless sintering, hot pressing, and gas pressure sintering. Resistivities of most samples with ∼90% densities were < 100 ohm.cm. Hardness, toughness, MOR, and oxidation resistance of selected samples are presented. Hot-pressed samples attained full or maximum densities. TiN content, combinations of additives and sintering conditions influenced the microstructures, mechanical properties, electrical resistivities and oxidation resistance of the products. Oxidation resistance comparable to Si3N4 and best overall properties were obtained for hot pressed Si3N4-40TiN-6Y2O3-2AI2O3.