EN ISO 18754:2022
(Main)Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of density and apparent porosity (ISO 18754:2020)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of density and apparent porosity (ISO 18754:2020)
This document specifies methods for the determination of the apparent solid density, bulk density, apparent porosity and geometric bulk density of fine ceramics, including all ceramic matrix composites.
Two methods are described and are designated as Methods A and B, as follows:
— Method A: Determination of bulk density, apparent solid density and apparent porosity by liquid displacement (Archimedes' method).
NOTE 1 This method is not appropriate for the determination of an apparent porosity greater than 10 %. For materials with higher porosity, the accuracy of the measurement might not be satisfactory. This method might also not give a satisfactory open porosity result if it is less than 0,5 %.
NOTE 2 This method is also not suitable for materials which are known to have an average pore size of greater than 600 µm.
— Method B: Determination of bulk density only, by measurement of geometric dimensions and mass.
Hochleistungskeramik - Bestimmung der Dichte und der scheinbaren Porosität (ISO 18754:2020)
Dieses Dokument legt Verfahren zur Bestimmung der scheinbaren Feststoffdichte, der Rohdichte, der scheinbaren Porosität und der geometrischen Rohdichte von Feinkeramik, einschließlich aller Keramik-Matrix-Verbundstoffe, fest.
Es werden zwei Verfahren beschrieben, die im Folgenden als Verfahren A und B bezeichnet werden:
— Verfahren A: Bestimmung der Rohdichte, der scheinbaren Feststoffdichte und der scheinbaren Porosität durch Flüssigkeitsverdrängung (Archimedes-Verfahren).
ANMERKUNG 1 Dieses Verfahren ist nicht zur Bestimmung einer scheinbaren Porosität von mehr als 10 % geeignet. Bei Werkstoffen mit höherer Porosität ist die Genauigkeit der Messung möglicherweise nicht zufriedenstellend. Dieses Verfahren liefert möglicherweise auch kein zufriedenstellendes Ergebnis für die offene Porosität, wenn diese weniger als 0,5 % beträgt.
ANMERKUNG 2 Dieses Verfahren ist auch nicht für Werkstoffe geeignet, die bekanntermaßen eine mittlere Porengröße von mehr als 600 μm haben.
— Verfahren B: Bestimmung nur der Rohdichte durch Bestimmung der geometrischen Maße und der Masse.
Céramiques techniques - Détermination de la masse volumique et de la porosité apparente (ISO 18754:2020)
Le présent document spécifie des méthodes de détermination de la masse volumique solide apparente, de la masse volumique réelle, de la porosité apparente et de la masse volumique géométrique des céramiques techniques, y compris tous les composites à matrice céramique.
Le présent document présente deux méthodes, désignées «Méthode A» et «Méthode B», comme suit:
— Méthode A: Détermination de la masse volumique réelle, de la masse volumique solide apparente et de la porosité apparente par déplacement de liquide (méthode d'Archimède).
NOTE 1 Cette méthode n'est pas appropriée pour la détermination d'une porosité apparente supérieure à 10 %. Pour les matériaux présentant une porosité supérieure à cette valeur, l'exactitude de la mesure pourrait ne pas être garantie. Il est également possible que cette méthode ne donne pas un résultat satisfaisant lors de la mesure de la porosité ouverte lorsqu'elle est inférieure à 0,5 %.
NOTE 2 Cette méthode n'est pas non plus applicable à des matériaux connus pour avoir des pores de taille moyenne supérieure à 600 µm.
— Méthode B: Détermination de la masse volumique réelle uniquement, par mesurage des dimensions géométriques et de la masse.
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Določanje gostote in navidezne poroznosti (ISO 18754:2020)
Ta dokument navaja metode za določanje navidezne trdne gostote, masne gostote, navidezne poroznosti in geometrijske masne gostote fine keramike, vključno z vsemi keramičnimi matričnimi kompoziti.
Opisani sta metodi, ki sta označeni kot metodi A in B:
– Metoda A: Določanje masne gostote, navidezne gostote trdne snovi in navidezne poroznosti z izpodrivanjem tekočine (Arhimedova metoda).
OPOMBA 1: Ta metoda ni primerna za določanje navidezne poroznosti, večje od 10 %. Za materiale z večjo poroznostjo natančnost meritve morda ne bo zadovoljiva. Ta metoda morda ne bo dala zadovoljivega rezultata odprte poroznosti, če je ta manjša od 0,5 %.
OPOMBA 2: Ta metoda tudi ni primerna za materiale, za katere je znano, da imajo povprečno velikost por večjo od 600 µm.
– Metoda B: Določanje samo masne gostote z merjenjem geometrijskih dimenzij in mase.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-junij-2022
Nadomešča:
SIST EN 1389:2004
SIST EN 623-2:2000
Fina keramika (sodobna keramika, sodobna tehnična keramika) - Določanje
gostote in navidezne poroznosti (ISO 18754:2020)
Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of
density and apparent porosity (ISO 18754:2020)
Hochleistungskeramik - Bestimmung der Dichte und der scheinbaren Porosität (ISO
18754:2020)
Céramiques techniques - Détermination de la masse volumique et de la porosité
apparente (ISO 18754:2020)
Ta slovenski standard je istoveten z: EN ISO 18754:2022
ICS:
81.060.30 Sodobna keramika Advanced ceramics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 18754
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2022
EUROPÄISCHE NORM
ICS 81.060.30 Supersedes EN 1389:2003, EN 623-2:1993
English Version
Fine ceramics (advanced ceramics, advanced technical
ceramics) - Determination of density and apparent
porosity (ISO 18754:2020)
Céramiques techniques - Détermination de la masse Hochleistungskeramik - Bestimmung der Dichte und
volumique et de la porosité apparente (ISO der scheinbaren Porosität (ISO 18754:2020)
18754:2020)
This European Standard was approved by CEN on 27 March 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
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Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
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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 18754:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 18754:2020 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 18754:2022
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 October 2022, and conflicting national standards shall
be withdrawn at the latest by October 2022.
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 1389:2003 and EN 623-2:1993.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 18754:2020 has been approved by CEN as EN ISO 18754:2022 without any modification.
INTERNATIONAL ISO
STANDARD 18754
Third edition
2020-04
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Determination of density and
apparent porosity
Céramiques techniques — Détermination de la masse volumique et de
la porosité apparente
Reference number
ISO 18754:2020(E)
©
ISO 2020
ISO 18754:2020(E)
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2020 – All rights reserved
ISO 18754:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Method by liquid displacement (Method A) . 2
4.1 Principle . 2
4.2 Apparatus . 2
4.3 Test pieces . 3
4.3.1 General requirements . 3
4.3.2 Specific requirements for ceramic matrix composites . 3
4.4 Procedure . 4
4.4.1 Determination of the mass of the dried test piece . 4
4.4.2 Impregnation of the test piece with the immersion liquid . 4
4.4.3 Determination of the apparent mass of the test piece . 4
4.4.4 Determination of the mass of the soaked test piece . 5
4.4.5 Determination of the density of the immersion liquid . 5
4.5 Accuracy of mass measurement . . 5
4.6 Expression of results . 5
4.6.1 Apparent solid density . . 5
4.6.2 Bulk density . 6
4.6.3 Apparent porosity . 6
5 Method by measurement of dimensions and mass (Method B) .6
5.1 Principle . 6
5.2 Apparatus . 6
5.3 Test pieces . 7
5.3.1 General requirements . 7
5.3.2 Specific requirements for ceramic matrix composites . 7
5.4 Procedure . 8
5.4.1 Determination of the mass of the dried test pieces . 8
5.4.2 Determination of the dimensions of the dried test pieces . 8
5.5 Expression of results . 8
6 Test report . 8
Bibliography .10
ISO 18754:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
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iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
This third edition cancels and replaces the second edition (ISO 18754:2013), which has been technically
revised. The main changes compared to the previous edition are as follows:
— clarification of the different methods covered by the document;
— extension of the applicability field of the method to ceramic matrix composites (including the fibre
reinforced matrix);
— incorporation of specific requirements in terms of geometry and sizes of the test specimens in
this case.
Any f
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