ISO 21068-2:2024

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon — Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free and surface silica

ISO 21068-2:2024

Name:ISO 21068-2:2024   Standard name:Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon — Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free and surface silica
Standard number:ISO 21068-2:2024   language:English language
Release Date:09-Jun-2024   technical committee:ISO/TC 33 - Refractories
Drafting committee:ISO/TC 33 - Refractories   ICS number:81.080 - Refractories
International
Standard
ISO 21068-2
Second edition
Chemical analysis of raw materials
2024-06
and refractory products containing
silicon-carbide, silicon-nitride,
silicon-oxynitride and sialon —
Part 2:
Determination of volatile
components, total carbon, free
carbon, silicon carbide, total and
free silicon, free and surface silica
Analyse chimique des matières premières et des produits
réfractaires contenant du carbure de silicium, du nitrure de
silicium, de l’oxynitrure de silicium et du SiAlON —
Partie 2: Dosage des composés volatils, du carbone total, du
carbone libre, du carbure de silicium, du silicium total et libre et
de la silice libre et superficielle
Reference number
ISO 21068-2:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 21068-2:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: [email protected]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO 21068-2:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Determination of volatile components by gravimetric methods . 1
4.1 General .1
4.2 Determination of the loss on drying at 250 °C (w ) .2
LOD250
4.2.1 Principle .2
4.2.2 Apparatus .2
4.2.3 Procedure .2
4.2.4 Calculation .2
4.3 Determination of the loss on ignition in argon (w ) .2
LOIAr
4.3.1 Principle .2
4.3.2 Apparatus .3
4.3.3 Test assembly .3
4.3.4 Reagents .
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27