Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
Notes
Effects of structural differences in starting materials on the formation behavior of cubic silicon nitride by shock compression
Yusuke YAMAMOTOHirotaka YOKOTANatsuko KOJIMAShigenobu HAYASHITakamichi KOBAYASHIToshimori SEKINEYoshiyuki SUGAHARA
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2013 Volume 121 Issue 1416 Pages 741-744

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Abstract

Cubic silicon nitride (c-Si3N4) was prepared at 37–38 GPa and ~1773 K by shock compression of residues of polysilazane, perhydropolysilazane (PHPS), pyrolyzed at 873, 1073 and 1273 K for 2 h. The residues pyrolyzed at 873 and 1073 K were amorphous materials, while the residue pyrolyzed at 1273 K consisted mainly of crystalline α-Si3N4. The relative amount of c-Si3N4 was the smallest in the shock-compressed product of the residue pyrolyzed at 1273 K, indicating that use of amorphous residues is advantageous for formation of c-Si3N4.

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© 2013 The Ceramic Society of Japan
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