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Hlavní stránka>BS EN ISO 21068-4:2024 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon XRD methods
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sklademVydáno: 2024-06-21
BS EN ISO 21068-4:2024 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon XRD methods

BS EN ISO 21068-4:2024

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon XRD methods

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Označení normy:BS EN ISO 21068-4:2024
Počet stran:20
Vydáno:2024-06-21
ISBN:978 0 539 20094 2
Status:Standard
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BS EN ISO 21068-4:2024


This standard BS EN ISO 21068-4:2024 Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon is classified in these ICS categories:
  • 81.080 Refractories
This document describes methods for the determination of mineralogical phases typically apparent in nitride and oxy-nitride bonded silicon carbide refractory products using a Bragg-Brentano diffractometer. It includes details of sample preparations and general principles for qualitative and quantitative analyses of mineralogical phase composition. Quantitative determination of ?-Si3N4, ?-Si3N4, Si2ON2, AlN, and ?’- SiAlON are described. For quantitative determination of ?-Si3N4, ?-Si3N4, Si2ON2, AlN and ?’- SiAlON refinement procedures based on the total nitrogen content of the sample are described. NOTE            ISO 21068-3 is used for the analysis of the total nitrogen content of the sample.
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