ISO/CD 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: 30.99 Effective date: Jan 11, 2023

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/CD 21068-4
30.99 CD approved for registration as DIS
Jan 11, 2023

Preview

Only informative sections of projects are publicly available. To view the full content, you will need to members of the committee. If you are a member, please log in to your account by clicking on the "Log in" button.