Chapter 32. Silicon Nitride Tensile Strength Database from CTP Processing for Reliability Project

  1. John B. Wachtman Jr.
  1. Michael R. Foley,
  2. Vimal K. Pujari,
  3. Lenny C. Sales and
  4. Dennis M. Tracey

Published Online: 28 MAR 2008

DOI: 10.1002/9780470314180.ch32

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8

How to Cite

Foley, M. R., Pujari, V. K., Sales, L. C. and Tracey, D. M. (1993) Silicon Nitride Tensile Strength Database from CTP Processing for Reliability Project, in Proceedings of the 17th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 14, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314180.ch32

Author Information

  1. Saint-Gobain/Norton Industrial Ceramics Corporation Northboro Research and Development Center Goddard Road Northboro, MA 01532-1545

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1993

ISBN Information

Print ISBN: 9780470375266

Online ISBN: 9780470314180

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Keywords:

  • generated;
  • CTP;
  • reliability;
  • multivariable;
  • summarized

Summary

Tensile strength data generated in Norton's CTP Processing for Reliability Project will be presented for a HIPed 4% yttria-silicon nitride. This database represents the result of an extensive multivariable experimental matrix designed to identify an optimized process directed at eliminating or minimizing critical flaws. The strength data follow from room-temperature fast-fracture tests of net-shaped-formed, pressure-cast cylindrical buttonhead tensile bars. Results of over 100 tensile tests coupled with detailed fractography will be summarized using Weibull statistics, including competing risk analyses. Specimen fabrication and mechanical testing issues (e.g., machining, strain gauging), which were addressed to ensure the integrity of the strength database, will also be discussed.