International Standard
ISO 21068-4:2024
Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon — Part 4: XRD methods
Reference number
ISO 21068-4:2024
Edition 1
International Standard
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ISO 21068-4:2024
Published (Edition 1, 2024)

ISO 21068-4:2024

ISO 21068-4:2024
CHF 63
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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 α-Si3N4, β-Si3N4, Si2ON2, AlN, and β’- SiAlON are described.

For quantitative determination of α-Si3N4, β-Si3N4, Si2ON2, AlN and β’-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.

General information

  •  : Published
     : 2024-06
    : International Standard published [60.60]
  •  : 1
     : 11
  • ISO/TC 33
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