EN ISO 21068-3:2008

Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2008)

ISO 21068-3:2008 specifies methods for the determination of total nitrogen and nitrogen calculated as silicon nitride, total oxygen, and free metallic and oxidic components in silicon carbide raw materials and refractory products.
It applies only to silicon carbide materials that are not bonded with nitrogen. Nitride-bonded silicon carbide refractories are covered in EN 12698-1.

Chemische Analyse von Siliciumcarbid enthaltenden Rohstoffen und feuerfesten Erzeugnissen - Teil 3: Bestimmung des Gehaltes an Stickstoff, Sauerstoff sowie metallischen und oxidischen Bestandteilen (ISO 21068-3:2008)

Dieser Teil von ISO 21068 legt Verfahren für die Bestimmung von Gesamtstickstoff und als Siliciumnitrid berechnetem Stickstoff, Gesamtsauerstoff sowie freien metallischen und sauerstoffhaltigen Bestandteilen in Siliciumcarbid enthaltenden Rohstoffen und feuerfesten Erzeugnissen fest.
Er gilt nur für Werkstoffe aus nicht nitridgebundenem Siliciumcarbid. Für nitridgebundenes Siliciumcarbid gilt EN 12698 1.

Analyse chimique des matières premières et des produits réfractaires contenant du carbure de silicium - Partie 3: Dosage de l'azote, de l'oxygène et des constituants métalliques et oxydés (ISO 21068-3:2008)

L'ISO 21068-3:2008 spécifie des méthodes permettant de doser l'azote total et l'azote calculés comme le nitrure de silicium, l'oxygène total et les composés libres métalliques et contenant de l'oxyde dans les matières premières et produits réfractaires de carbure de silicium.
Elle s'applique uniquement aux matériaux contenant du carbure de silicium qui ne sont pas liés à l'azote. Les matériaux contenant du carbure de silicium qui sont liés à l'azote sont couverts par l'EN 12698-1.

Kemijska analiza surovin in ognjevzdržnih izdelkov s silicijevim karbidom - 3.del: Določevanje dušika, kisika in kovin in oksidnih sestavin (ISO 21068-3:2008)

General Information

• Status: Published
• Publication Date: 31-Jul-2008
• Withdrawal Date: 27-Feb-2009
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 4 - Chemical analysis
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 01-Aug-2008
• Due Date: 22-Mar-2009
• Completion Date: 01-Aug-2008
• Ref Project: SIST EN ISO 21068-3:2008 - Chemical analysis of silicon-carbide-containing raw materials and refractory products - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO21068-3:2008)

Relations

• Revised: FprEN ISO 21068-3 - Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO/FDIS 21068‑3:2024)
• Effective Date: 18-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 21068-3:2008
01-december-2008
.HPLMVNDDQDOL]DVXURYLQLQRJQMHY]GUåQLKL]GHONRYVVLOLFLMHYLPNDUELGRPGHO
'RORþHYDQMHGXãLNDNLVLNDLQNRYLQLQRNVLGQLKVHVWDYLQ,62
Chemical analysis of silicon-carbide-containing raw materials and refractory products -
Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO21068
-3:2008)
Chemische Analyse von Siliciumcarbid enthaltenden Rohstoffen und feuerfesten
Erzeugnissen - Teil 3: Bestimmung des Gehaltes an Stickstoff, Sauerstoff sowie
metallenen und oxidischen Bestandteilen (ISO 21068-3:2008)
Analyse chimique des matières premières et des produits réfractaires contenant du
carbure de silicium - Partie 3: Dosage de l'azote, de l'oxygène et des constituants
métalliques et oxydés (ISO 21068-3:2008)
Ta slovenski standard je istoveten z: EN ISO 21068-3:2008
ICS:
81.080 Ognjevzdržni materiali Refractories
SIST EN ISO 21068-3:2008 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 21068-3:2008

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SIST EN ISO 21068-3:2008
EUROPEAN STANDARD
EN ISO 21068-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2008
ICS 81.080

English Version
Chemical analysis of silicon-carbide-containing raw materials
and refractory products - Part 3: Determination of nitrogen,
oxygen and metallic and oxidic constituents (ISO 21068-3:2008)
Analyse chimique des matières premières et des produits Chemische Analyse von Siliciumcarbid enthaltenden
réfractaires contenant du carbure de silicium - Partie 3: Rohstoffen und feuerfesten Erzeugnissen - Teil 3:
Dosage de l'azote, de l'oxygène et des constituants Bestimmung des Gehaltes an Stickstoff, Sauerstoff sowie
métalliques et oxydés (ISO 21068-3:2008) metallischen und oxidischen Bestandteilen (ISO 21068-
3:2008)
This European Standard was approved by CEN on 11 July 2008.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2008 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21068-3:2008: E
worldwide for CEN national Members.

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SIST EN ISO 21068-3:2008
EN ISO 21068-3:2008 (E)
Contents Page
Foreword.3

2

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SIST EN ISO 21068-3:2008
EN ISO 21068-3:2008 (E)
Foreword
This document (EN ISO 21068-3:2008) has been prepared by Technical Committee ISO/TC 33 "Refractories"
in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat of
which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2009, and conflicting national standards shall be withdrawn
at the latest by February 2009.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 21068-3:2008 has been approved by CEN as a EN ISO 210
...