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ÖNORM EN ISO 21068-4

Issue date: 2024 10 15

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 4: XRD methods (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.

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General information on ÖNORM EN ISO 21068-4

Format

Digital | 19 Pages

Language

German | English | Download GER/ENG

Publisher

Austrian Standards International

Committee 046 Cement used in construction industry

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Normative References

Here you will find an extract of the normative references. Please refer to the document itself for the full list.

Dokumentnummer	Titel	Ausgabedatum	Art	Link
Dokumentnummer ISO 10081-4:2014	Titel Classification of dense shaped refractory products — Part 4: Special products	Ausgabedatum 2014 08 14	Art Standard	Zur Produktseite
Dokumentnummer ISO 21068-1:2008	Titel Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 1: General information and sample preparation	Ausgabedatum 2008 07 21	Art Standard	Zur Produktseite
Dokumentnummer ISO 21068-3:2008	Titel Chemical analysis of silicon-carbide-containing raw materials and refractory products — Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents	Ausgabedatum 2008 07 21	Art Standard	Zur Produktseite
Dokumentnummer ISO 5022:1979	Titel Shaped refractory products — Sampling and acceptance testing	Ausgabedatum 1979 12 01	Art Standard	Zur Produktseite
Dokumentnummer ISO 8656-1:1988	Titel Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling scheme	Ausgabedatum 1988 12 29	Art Standard	Zur Produktseite

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