The interaction of iron during the hot-pressing of silicon nitride

A. D. Stalios; J. Luyten; C. D. Hemsley; Frank L. Riley; Richard J. Fordham

doi:10.1016/0955-2219(91)90003-I

The interaction of iron during the hot-pressing of silicon nitride

A. D. Stalios
, J. Luyten
, C. D. Hemsley
, Frank L. Riley
, Richard J. Fordham

Research output › peer-review

Abstract

Microstructural analysis of a commercial hot-pressed silicon nitride containing the equivalents of 1·2 mass % MgO and 2·7 mass % Fe₂O₃, shows the existence of intergranular-phase forsterite-fayalite solid solution (olivine), together with iron silicides. The results of modelling hot-pressing experiments carried out at 1500°C with iron(III) oxide and iron additions suggest that the function of iron compounds during hot-pressing is complex, and includes the formation of low-melting transient liquids in the FeO-MgO-SiO₂ system which can be very effective densification aids. Metallic iron appears to yield readily an equally effective iron silicide liquid.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Journal of the European Ceramic Society
Volume	7
Issue number	2
DOIs	https://doi.org/10.1016/0955-2219(91)90003-I
State	Published - 1991

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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10.1016/0955-2219(91)90003-I

Cite this

@article{1550e5ce90b84cd3b7bdd47babd23fbd,

title = "The interaction of iron during the hot-pressing of silicon nitride",

abstract = "Microstructural analysis of a commercial hot-pressed silicon nitride containing the equivalents of 1·2 mass \% MgO and 2·7 mass \% Fe2O3, shows the existence of intergranular-phase forsterite-fayalite solid solution (olivine), together with iron silicides. The results of modelling hot-pressing experiments carried out at 1500°C with iron(III) oxide and iron additions suggest that the function of iron compounds during hot-pressing is complex, and includes the formation of low-melting transient liquids in the FeO-MgO-SiO2 system which can be very effective densification aids. Metallic iron appears to yield readily an equally effective iron silicide liquid.",

author = "Stalios, \{A. D.\} and J. Luyten and Hemsley, \{C. D.\} and Riley, \{Frank L.\} and Fordham, \{Richard J.\}",

year = "1991",

doi = "10.1016/0955-2219(91)90003-I",

language = "English",

volume = "7",

pages = "75--81",

journal = "Journal of the European Ceramic Society",

issn = "0955-2219",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - The interaction of iron during the hot-pressing of silicon nitride

AU - Stalios, A. D.

AU - Luyten, J.

AU - Hemsley, C. D.

AU - Riley, Frank L.

AU - Fordham, Richard J.

PY - 1991

Y1 - 1991

N2 - Microstructural analysis of a commercial hot-pressed silicon nitride containing the equivalents of 1·2 mass % MgO and 2·7 mass % Fe2O3, shows the existence of intergranular-phase forsterite-fayalite solid solution (olivine), together with iron silicides. The results of modelling hot-pressing experiments carried out at 1500°C with iron(III) oxide and iron additions suggest that the function of iron compounds during hot-pressing is complex, and includes the formation of low-melting transient liquids in the FeO-MgO-SiO2 system which can be very effective densification aids. Metallic iron appears to yield readily an equally effective iron silicide liquid.

AB - Microstructural analysis of a commercial hot-pressed silicon nitride containing the equivalents of 1·2 mass % MgO and 2·7 mass % Fe2O3, shows the existence of intergranular-phase forsterite-fayalite solid solution (olivine), together with iron silicides. The results of modelling hot-pressing experiments carried out at 1500°C with iron(III) oxide and iron additions suggest that the function of iron compounds during hot-pressing is complex, and includes the formation of low-melting transient liquids in the FeO-MgO-SiO2 system which can be very effective densification aids. Metallic iron appears to yield readily an equally effective iron silicide liquid.

UR - https://www.scopus.com/pages/publications/0025889284

U2 - 10.1016/0955-2219(91)90003-I

DO - 10.1016/0955-2219(91)90003-I

M3 - Article

AN - SCOPUS:0025889284

SN - 0955-2219

VL - 7

SP - 75

EP - 81

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 2

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