FprEN ISO 21068-4

Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 4: XRD methods (ISO/FDIS 21068‑4:2024)

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.

Chemische Analyse von Rohstoffen und feuerfesten Erzeugnissen, die Siliciumcarbid, Siliciumnitrid, Siliciumoxinitrid und Sialon enthalten - Teil 4: XRD-Verfahren (ISO/FDIS 21068‑4:2024)

Dieses Dokument beschreibt Verfahren zur Bestimmung von mineralogischen Phasen, die gewöhnlich in feuerfesten Erzeugnissen aus nitrid  und oxinitridgebundenem Siliciumcarbid vorkommen, unter Verwendung eines Bragg Brentano Diffraktometers.
Es enthält Einzelheiten zu Probenvorbereitungen sowie allgemeine Grundlagen für qualitative und quantitative Analysen der mineralogischen Phasen Zusammensetzung. Die quantitative Bestimmung von α Si3N4, β Si3N4, Si2ON2, AlN und β’ SiAlON wird beschrieben.
Für die quantitative Bestimmung von α Si3N4, β Si3N4, Si2ON2, AlN und β’ SiAlON werden Optimie-rungsverfahren auf der Grundlage des Gesamtstickstoffgehalts der Probe beschrieben.
ANMERKUNG   ISO 21068 3 wird für die Analyse des Gesamtstickstoffgehalts der Probe verwendet.

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 4: Méthodes de DRX (ISO/FDIS 21068‑4:2024)

Kemijska analiza surovin in ognjevzdržnih izdelkov, ki vsebujejo silicijev karbid, silicijev nitrid, silicijev oksinitrid in sialon - 4. del: Metode XRD (ISO/FDIS 21068‑4:2024)

General Information

• Status: Not Published
• Publication Date: 22-Jul-2024
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 4 - Chemical analysis
• Current Stage: 5060 - Closure of Vote - Formal Approval
• Start Date: 23-Apr-2024
• Due Date: 02-Oct-2025
• Completion Date: 23-Apr-2024
• Ref Project: kSIST FprEN 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 (ISO/FDIS 21068‑4:2024)

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 21068-4:2023
01-julij-2023
Kemijska analiza surovin in ognjevzdržnih izdelkov, ki vsebujejo silicijev karbid,
silicijev nitrid, silicijev oksinitrid in sialon - 4. del: Metode XRD (ISO/DIS 21068-
4:2023)
Chemical analysis of raw materials and refractory products containing silicon-carbide,
silicon-nitride, silicon-oxynitride and sialon - Part 4: XRD methods (ISO/DIS 21068-
4:2023)
Chemische Analyse von Rohstoffen und feuerfesten Erzeugnissen, die Siliciumcarbid,
Siliciumnitrid, Siliciumoxinitrid und Sialon enthalten - Teil 4: XRD-Verfahren (ISO/DIS
21068-4:2023)
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
4: Méthodes de DRX (ISO/DIS 21068-4:2023)
Ta slovenski standard je istoveten z: prEN ISO 21068-4
ICS:
71.040.40 Kemijska analiza Chemical analysis
81.080 Ognjevzdržni materiali Refractories
oSIST prEN ISO 21068-4:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 21068-4:2023

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oSIST prEN ISO 21068-4:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 21068-4
ISO/TC 33 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-06-02 2023-08-25
Chemical analysis of raw materials and refractory products
containing silicon-carbide, silicon-nitride, silicon-
oxynitride and sialon —
Part 4:
XRD methods
ICS: 81.080
This document is circulated as received from the committee secretariat.
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oSIST prEN ISO 21068-4:2023

DRAFT INTERNATIONAL STANDARD
ISO/DIS 21068-4
ISO/TC 33 Secretariat: BSI
Voting begins on: Voting terminates on:

Chemical analysis of raw materials and refractory products
containing silicon-carbide, silicon-nitride, silicon-
oxynitride and sialon —
Part 4:
XRD methods
ICS: 81.080
This document is circulated as received from the committee secretariat.
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oSIST prEN ISO 21068-4:2023
ISO/DIS 21068-4:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope .
...