Phase composition of the products of nitriding ferrosilicon with zircon concentrate additives

Phase composition of the products of nitriding ferrosilicon with zircon concentrate additives

The process of nitride formation during combustion of iron silicon with the addition of zircon concentrate in nitrogen gas is investigated. It is determined that in the presence of zircon (5–70%) ferrosilicon burns in a surface regime, and the products of combustion are multiphase. For the optimal p...

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Veröffentlicht in:Glass and ceramics 2008, Vol.65 (1-2), p.38-40
Hauptverfasser: Chukhlomina, L. N., Vitushkina, O. G., Golobokov, N. N., Vereshchagin, V. I.
Format: Artikel
Sprache:eng
Schlagworte:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Combustion
Composites
Concentration (composition)
Enrichment
Ferrosilicon
Glass
Iron
Materials Science
Natural Materials
Nitrides
Zircon
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Zusammenfassung:The process of nitride formation during combustion of iron silicon with the addition of zircon concentrate in nitrogen gas is investigated. It is determined that in the presence of zircon (5–70%) ferrosilicon burns in a surface regime, and the products of combustion are multiphase. For the optimal parameters of synthesis (nitrogen pressure 4–7 MPa and sample diameter 35–40 mm) the products of combustion are a composition consisting of a ceramic constituent (Si 3 N 4 -ZrO 2 -Si 2 N 2 O) and iron (α-Fe). The method of acidic enrichment is used to obtain a composite ceramic powder with iron mass content 0.5%
ISSN:0361-7610
1573-8515
DOI:10.1007/s10717-008-9006-5