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ISO 21068-4:2024
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
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| Standard´s number: | ISO 21068-4:2024 |
| Pages: | 11 |
| Edition: | 1 |
| Released: | 2024 |
DESCRIPTION
ISO 21068-4:2024
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.