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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

Standard Details

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

Status : Published
Standard Type: Main
Document No: ISO 21068-4 : 2024
Document Year: 2024
Pages: 11
Edition: 1

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ISO 21068-4 : 2024
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