The Intergranular Phase in Hot‐Pressed Silicon Nitride: II, Evidence for Phase Separation and Crystallization

D. R. CLARKE; N. J. ZALUZEC; R. W. CARPENTER

doi:10.1111/j.1151-2916.1981.tb10226.x

The Intergranular Phase in Hot‐Pressed Silicon Nitride: II, Evidence for Phase Separation and Crystallization

D. R. CLARKE, N. J. ZALUZEC, R. W. CARPENTER

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25 Scopus citations

Abstract

Compositional and morphological evidence obtained using transmission electron microscopy is presented indicating that the noncrystalline phase in a hot‐pressed silicon nitride can undergo phase separation. The compositional range determined for the phase separation is close to the known miscibility gap in the pseudobinary system SiO₂‐MgO. Crystallization of Si2N₂O and MgSiO₃ from the noncrystalline phase is also evident, suggesting that it can contain some dissolved nitrogen and that the intergranular phase may be crystallizable.

Original language	English (US)
Pages (from-to)	608-611
Number of pages	4
Journal	Journal of the American Ceramic Society
Volume	64
Issue number	10
DOIs	https://doi.org/10.1111/j.1151-2916.1981.tb10226.x
State	Published - Oct 1981
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1111/j.1151-2916.1981.tb10226.x

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AU - CLARKE, D. R.

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AU - CARPENTER, R. W.

PY - 1981/10

Y1 - 1981/10

N2 - Compositional and morphological evidence obtained using transmission electron microscopy is presented indicating that the noncrystalline phase in a hot‐pressed silicon nitride can undergo phase separation. The compositional range determined for the phase separation is close to the known miscibility gap in the pseudobinary system SiO2‐MgO. Crystallization of Si2N2O and MgSiO3 from the noncrystalline phase is also evident, suggesting that it can contain some dissolved nitrogen and that the intergranular phase may be crystallizable.

AB - Compositional and morphological evidence obtained using transmission electron microscopy is presented indicating that the noncrystalline phase in a hot‐pressed silicon nitride can undergo phase separation. The compositional range determined for the phase separation is close to the known miscibility gap in the pseudobinary system SiO2‐MgO. Crystallization of Si2N2O and MgSiO3 from the noncrystalline phase is also evident, suggesting that it can contain some dissolved nitrogen and that the intergranular phase may be crystallizable.

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The Intergranular Phase in Hot‐Pressed Silicon Nitride: II, Evidence for Phase Separation and Crystallization

Abstract

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