ISO/NP 21068-4

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

General information

Current stage: 10.20 Effective date: 17 gush 2021

Originator: ISO

Owner: ISO/TC 33

Type: International Standard

Scope

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.

Life cycle

NOW

IN_DEVELOPMENT
ISO/NP 21068-4
10.20 New project ballot initiated
17 gush 2021

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