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The influence of process parameters and starting composition on the carbothermal production of sialon

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Abstract

TheΒ′-sialons (Si6-z Al z O z N8-z ) can be produced by carbothermal reduction of kaolin. The reaction mechanism of the sialon formation has been studied by several methods. Firstly, the composition of the reaction product is determined by XRD as function of the reaction time at 1400 and 1 500‡ C. The influence of additives, pellet size, nitrogen flow and clay type on the reaction is studied. Secondly, the carbon monoxide leaving the furnace is monitored. By studying the changes in carbon monoxide output as a function of the above-mentioned parameters a better understanding of the reaction mechanism has been obtained.

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Authors and Affiliations

  1. Centre for Technical Ceramics, P.O. Box 513, 5600, MB Eindhoven, The Netherlands

    E. Kokmeijer, C. Scholte, F. Blömer & R. Metselaar

Authors
  1. E. Kokmeijer
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  2. C. Scholte
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  3. F. Blömer
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  4. R. Metselaar
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Kokmeijer, E., Scholte, C., Blömer, F. et al. The influence of process parameters and starting composition on the carbothermal production of sialon. J Mater Sci 25, 1261–1267 (1990). https://doi.org/10.1007/BF00585434

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  • DOI: https://doi.org/10.1007/BF00585434

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