ISO 21068-4:2024

Published (Edition 1, 2024)

ISO 21068-4:2024

CHF 63

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Abstract

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

Publication date
: 2024-06

Stage
: International Standard published [60.60]
Edition
: 1

Number of pages
: 11
Technical Committee :
ISO/TC 33

ICS :
81.080
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