The synthesis of α- and β-sialon from fly-ash

R. Metselaar, D. Exalto, A.M.B. Mol, van, H.T.J.M. Hintzen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

The paper discusses carbothermal production of both ß-sialon or Ca-a-sialon from fly-ash. The progress of the reaction was followed by XRD and electron microscopy. During the formation of ß-sialon the z-value gradually decreases to the final value. Iron impurities in the fly-ash, which catalyse the reaction have a negative influence on the mechanical strength, but can be removed afterwards by electromagnetic separation or chemical leaching. From fly-ash with a high initial calcium concentration one can prepare Ca-a-sialon at 1500 °C. Initially ß-sialon is formed, but this is rapidly converted to the a-phase.
Original languageEnglish
Title of host publicationProceedings on CD: Pacific Rim Ceramics Societies (PacRim 2)
EditorsP. Walls, C. Sorrell, A. Ruys
Place of PublicationCairns, Australia
Pages56-63
Publication statusPublished - 1999

Publication series

NameInternational Ceramic Monographs
Volume2

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Coal Ash
Ashes
Electron microscopy
Leaching
Strength of materials
Iron
Impurities
Calcium

Cite this

Metselaar, R., Exalto, D., Mol, van, A. M. B., & Hintzen, H. T. J. M. (1999). The synthesis of α- and β-sialon from fly-ash. In P. Walls, C. Sorrell, & A. Ruys (Eds.), Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2) (pp. 56-63). (International Ceramic Monographs; Vol. 2). Cairns, Australia.
Metselaar, R. ; Exalto, D. ; Mol, van, A.M.B. ; Hintzen, H.T.J.M. / The synthesis of α- and β-sialon from fly-ash. Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2). editor / P. Walls ; C. Sorrell ; A. Ruys. Cairns, Australia, 1999. pp. 56-63 (International Ceramic Monographs).
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title = "The synthesis of α- and β-sialon from fly-ash",
abstract = "The paper discusses carbothermal production of both {\ss}-sialon or Ca-a-sialon from fly-ash. The progress of the reaction was followed by XRD and electron microscopy. During the formation of {\ss}-sialon the z-value gradually decreases to the final value. Iron impurities in the fly-ash, which catalyse the reaction have a negative influence on the mechanical strength, but can be removed afterwards by electromagnetic separation or chemical leaching. From fly-ash with a high initial calcium concentration one can prepare Ca-a-sialon at 1500 °C. Initially {\ss}-sialon is formed, but this is rapidly converted to the a-phase.",
author = "R. Metselaar and D. Exalto and {Mol, van}, A.M.B. and H.T.J.M. Hintzen",
year = "1999",
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series = "International Ceramic Monographs",
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Metselaar, R, Exalto, D, Mol, van, AMB & Hintzen, HTJM 1999, The synthesis of α- and β-sialon from fly-ash. in P Walls, C Sorrell & A Ruys (eds), Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2). International Ceramic Monographs, vol. 2, Cairns, Australia, pp. 56-63.

The synthesis of α- and β-sialon from fly-ash. / Metselaar, R.; Exalto, D.; Mol, van, A.M.B.; Hintzen, H.T.J.M.

Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2). ed. / P. Walls; C. Sorrell; A. Ruys. Cairns, Australia, 1999. p. 56-63 (International Ceramic Monographs; Vol. 2).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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T1 - The synthesis of α- and β-sialon from fly-ash

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AU - Mol, van, A.M.B.

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PY - 1999

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N2 - The paper discusses carbothermal production of both ß-sialon or Ca-a-sialon from fly-ash. The progress of the reaction was followed by XRD and electron microscopy. During the formation of ß-sialon the z-value gradually decreases to the final value. Iron impurities in the fly-ash, which catalyse the reaction have a negative influence on the mechanical strength, but can be removed afterwards by electromagnetic separation or chemical leaching. From fly-ash with a high initial calcium concentration one can prepare Ca-a-sialon at 1500 °C. Initially ß-sialon is formed, but this is rapidly converted to the a-phase.

AB - The paper discusses carbothermal production of both ß-sialon or Ca-a-sialon from fly-ash. The progress of the reaction was followed by XRD and electron microscopy. During the formation of ß-sialon the z-value gradually decreases to the final value. Iron impurities in the fly-ash, which catalyse the reaction have a negative influence on the mechanical strength, but can be removed afterwards by electromagnetic separation or chemical leaching. From fly-ash with a high initial calcium concentration one can prepare Ca-a-sialon at 1500 °C. Initially ß-sialon is formed, but this is rapidly converted to the a-phase.

M3 - Conference contribution

SN - 0-646-32523-x

T3 - International Ceramic Monographs

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BT - Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2)

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CY - Cairns, Australia

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Metselaar R, Exalto D, Mol, van AMB, Hintzen HTJM. The synthesis of α- and β-sialon from fly-ash. In Walls P, Sorrell C, Ruys A, editors, Proceedings on CD: Pacific Rim Ceramics Societies (PacRim 2). Cairns, Australia. 1999. p. 56-63. (International Ceramic Monographs).