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


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.


Polymer Pyrolysis Axial Direction Growth Direction Growth Characteristic 
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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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