International Standard
ISO 21068-4
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
ISO 21068-4
Edición 1
2024-06
2024-06
© ISO 2024
En proceso de publicación
u
ISO 21068-4
83603
En proceso de publicación
(Edición 1, 2024)
Pasos finales de producción (hasta siete semanas).
Resumen
This standard 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 preparation and general principles for qualitative and quantitative analysis of mineralogical phase composition. Quantitative determination of -Si3N4, -Si3N4, Si2ON2, AlN, and SiAlON are described. NOTE For the refinement procedures the total nitrogen content, analysed in accordance with ISO 21068-3 is needed.
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