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SLOVENSKI STANDARD
01-februar-2023
Nadomešča:
SIST EN 725-4:2007
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Preskusne
metode za kemične analize praškov aluminijevega nitrida (ISO 21814:2019)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for
chemical analysis of aluminium nitride powders (ISO 21814:2019)
Hochleistungskeramik - Verfahren zur chemischen Analyse von Aluminiumnitridpulvern
(ISO 21814:2019)
Céramiques techniques - Méthodes d'analyse chimique des poudres de nitrure
d'aluminium (ISO 21814:2019)
Ta slovenski standard je istoveten z: EN ISO 21814:2022
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21814
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 81.060.30 Supersedes EN 725-4:2006
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Methods for chemical analysis of aluminium
nitride powders (ISO 21814:2019)
Céramiques techniques - Méthodes d'analyse chimique Hochleistungskeramik - Verfahren zur chemischen
des poudres de nitrure d'aluminium (ISO 21814:2019) Analyse von Aluminiumnitridpulvern (ISO
21814:2019)
This European Standard was approved by CEN on 21 November 2022.
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-CENELEC 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-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21814:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 21814:2019 has been prepared by Technical Committee ISO/TC 206 "Fine ceramics” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 21814:2022
by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by
DIN.
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 May 2023, and conflicting national standards shall be
withdrawn at the latest by May 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 725-4:2006.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 21814:2019 has been approved by CEN as EN ISO 21814:2022 without any modification.
INTERNATIONAL ISO
STANDARD 21814
First edition
2019-02
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Methods for chemical analysis of
aluminium nitride powders
Céramiques techniques — Méthodes d’analyse chimique des poudres
de nitrure d'aluminium
Reference number
ISO 21814:2019(E)
©
ISO 2019
ISO 21814:2019(E)
© ISO 2019
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
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Published in Switzerland
ii © ISO 2019 – All rights reserved
ISO 21814:2019(E)
Contents Page
Foreword .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Analytes and ranges . 2
5 Preparation of the test sample . 2
5.1 General . 2
5.2 Sampling . 3
5.3 Drying . 3
5.4 Weighing . 3
6 Reporting the analytical values . 3
6.1 Number of analyses. 3
6.2 Blank test . 3
6.3 Evaluation of the analytical values. 3
6.4 Expression of the analytical values . 3
7 Determination of the aluminium content . 4
7.1 Classification of the determination methods . 4
7.2 Acid decomposition-ICP-OES method . 4
7.2.1 Principle . 4
7.2.2 Reagents . 4
7.2.3 Apparatus and instruments. 4
7.2.4 Procedure . 5
7.2.5 Blank test . 5
7.2.6 Drawing of the calibration curve . 5
7.2.7 Calculation . 5
7.3 Acid pressure decomposition-CyDTA-zinc back titration method . 5
7.3.1 Principle . 5
7.3.2 Reagents . 6
7.3.3 Apparatus and instruments. 6
7.3.4 Procedure . 8
7.3.5 Blank test . 8
7.3.6 Calculation . 8
8 Determination of the total nitrogen content . 8
8.1 Classification of the determination methods . 8
8.2 Acid pressure decomposition-distillation separation-acidimetric titration method . 9
8.2.1 Principle . 9
8.2.2 Reagents . 9
8.2.3 Apparatus .10
8.2.4 Procedure .12
8.2.5 Recovery measurement .12
8.2.6 Calculation .13
8.3 Direct decomposition-distillation separation-acidimetric titration method .13
8.3.1 Principle .13
8.3.2 Reagents .13
8.3.3 Apparatus .13
8.3.4 Procedure .
...