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Journal of Materials Science

, Volume 31, Issue 10, pp 2677–2682 | Cite as

Morphology and growth characteristics of Si3N4 whiskers made by pyrolysis of amorphous Si-N-C powders

  • Ya-Li Li
  • Yong Liang
  • Zhuang-Qi Hu
Papers

Abstract

The morphology and growth characteristics of α-Si3N4 whiskers grown by pyrolysis of amorphous Si-N-C powders were investigated mainly by TEM. It was found that the whiskers exhibited various morphologies including ribbon-, rod-, prism- and nodule-like whiskers. Three growth directions were found:\({\text{\{ }}1\mathop 1\limits^ - 00{\text{\} *}}\), {1010}* and {0001}* which are dense planes in the hexahedral structure of α-Si3N4. No bobbles existed on the whisker tips, but there was a leading growth along the whisker long axial directions and small Si3N4 grains bonded on the whisker tips, which indicated that the whiskers nucleated on small α-Si3N4 grains and grew by a vapour-solid condensation mechanism.

Keywords

Polymer Pyrolysis Axial Direction Growth Direction Growth Characteristic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • Ya-Li Li
    • 1
  • Yong Liang
    • 1
  • Zhuang-Qi Hu
    • 1
  1. 1.National Key Lab of Rapidly Solidified Nonequilibrium Alloys, Institute of Metal ResearchChinese Academy of ScienceShenyangPeople’s Republic of China

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