High-temperature metastability of cubic spinel Si3N4
- 22 October 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 79 (17) , 2719-2721
- https://doi.org/10.1063/1.1412826
Abstract
The metastability of cubic spinel Si3N4 has been investigated at high temperature, up to about 1800 K, and in Ar atmosphere by quench experiments and differential thermal analyses coupled with thermogravimetry. The results indicate that the enthalpy change from spinel-type Si3N4 to β-Si3N4 is −29.2±3.5 kJ/mol and that the transformation starts at 1670 K. The high-temperature metastability of spinel Si3N4 may provide various directions for industrial applications.Keywords
This publication has 10 references indexed in Scilit:
- Si 29 magic-angle-spinning nuclear-magnetic-resonance study of spinel-type Si3N4Applied Physics Letters, 2001
- High pressure-high temperature synthesis and elasticity of the cubic nitride spinel γ-Si3N4Journal of Physics: Condensed Matter, 2001
- Shock-induced phase transition of toPhysical Review B, 2000
- High-resolution transmission electron microscopy of cubic Si3N4Journal of Applied Physics, 2000
- Shock-induced transformation of β-Si3N4 to a high-pressure cubic-spinel phaseApplied Physics Letters, 2000
- Interesting Physical Properties of the New Spinel Phase of andPhysical Review Letters, 1999
- Synthesis of cubic silicon nitrideNature, 1999
- Thermodynamic properties of α‐quartz, coesite, and stishovite and equilibrium phase relations at high pressures and high temperaturesJournal of Geophysical Research, 1995
- Calorimetric study of high-pressure polymorphs of Li2WO4 and Li2MoO4Journal of Solid State Chemistry, 1986
- Sialons and related nitrogen ceramicsJournal of Materials Science, 1976