Chapter 1. Effects of Manufacturing Process on Surface States of Commercial Silicon Nitride Powders

  1. Don Bray
  1. Tetsuya Nakamatsu,
  2. Chanel Ishizaki and
  3. Kozo Ishizaki

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294482.ch1

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3

How to Cite

Nakamatsu, T., Ishizaki, C. and Ishizaki, K. (1988) Effects of Manufacturing Process on Surface States of Commercial Silicon Nitride Powders, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 19, Issue 3 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294482.ch1

Author Information

  1. Nagaoka Gijutsu-Kagaku Daigaku (Nagaoka University of Technology) Nagaoka, Niigata, 940-2188, Japan

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1988

ISBN Information

Print ISBN: 9780470375587

Online ISBN: 9780470294482

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Keywords:

  • quantitative;
  • carbothermal;
  • spectroscopic;
  • equipment;
  • mechanisms

Summary

Temperature Programmed Desorption (TPD) technique, in the range 40–1300°C, is applied for the qualitative and quantitative analysis of the surface functional groups present on seven kinds of commercial Si3N4 which were synthesized by different production processes with different nitridation media and final treatments. The desorbed species detected for all the powders were the same H2, H2O, NH3, and N2 The spectra of each powder are qualitative and quantitatively unique Certain similarities observed may be associated with the use of the same nitridation media. The use of ammonia enhances the development of SiNH2 surface groups for powders synthesized by the diimide precipitation and carbothermal reduction of silica methods. In the case of powders produced using direct nitridation of silicon the same effect is obtained by the application of an acid and water washing final treatment. The use of NH3 gas or mixture of N2 with H2 as nitridation media enhances the development of H terminated functional groups. The same effect is observed when CH4 is used instead of C in the carbothermal reduction of silica.