ISO 20343:2017

Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for determining elastic modulus of thick ceramic coatings at elevated temperature

ISO 20343:2017 specifies a method of test for determining the elastic modulus of thick ceramic monolayer coatings (thickness > 0,03 mm) at elevated temperatures, using the impulse excitation method. Procedures for test piece preparation, test modes and rates (load rate or displacement), data collection, and reporting procedures are given. ISO 20343:2017 applies primarily to brittle ceramic coatings on ceramic or metal substrates. This test method can be used for material research, quality control, and characterization and design data-generation purposes.

Céramiques techniques — Méthode d'essai relative à la détermination du module élastique des revêtements de céramique épais à température élevée

General Information

• Status: Published
• Publication Date: 02-Jan-2017
• ICS: 81.060.30 - Advanced ceramics
• Technical Committee: ISO/TC 206 - Fine ceramics
• Drafting Committee: ISO/TC 206/WG 10 - Coatings
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 20-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 20343
First edition
    2017-01
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Test method for determining elastic
modulus of thick ceramic coatings at
elevated temperature
Céramiques techniques — Méthode d’essai relative à la détermination
du module élastique des revêtements de céramique épais à
température élevée
Reference number
ISO 20343:2017(E)
©
ISO 2017

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ISO 20343:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2017 – All rights reserved

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ISO 20343:2017(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
5.1 Elastic modulus testing machine . 2
5.2 Heating system . 2
5.2.1 General. 2
5.2.2 Temperature stability . 2
5.2.3 Test temperature uniformity . 2
5.2.4 Furnace heating rate . 2
5.2.5 Furnace stability. 2
5.3 Temperature measuring and indicating instruments . 2
5.3.1 General. 2
5.3.2 Thermocouples . 3
5.3.3 Verification of the thermocouple temperature measuring system . 3
5.4 Dimension-measuring device. 3
5.5 Test fixture . 3
5.5.1 General. 3
5.5.2 Fixture material . 3
6 Test pieces . 3
6.1 Test piece size . 3
6.2 Test piece preparation and storage . 4
7 Test procedure . 4
7.1 Measurement of the size and mass of the test-pieces . 4
7.2 Measurement of elastic modulus of coating at elevated temperature . 4
8 Calculation of results . 6
8.1 Standard formula for elastic modulus of coating . 6
8.2 Mean value and standard deviation for elastic modulus . 6
8.3 Variation of elastic modulus with temperature . 7
9 Analysis of precision and uncertainty . 8
10 Test report . 8
Bibliography . 9
© ISO 2017 – All rights reserved iii

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ISO 20343:2017(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
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
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).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
iv © ISO 2017 – All rights reserved

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INTERNATIONAL STANDARD ISO 20343:2017(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for determining elastic modulus
of thick ceramic coatings at elevated temperature
1 Scope
This document specifies a method of test for determining the elastic modulus of thick ceramic
monolayer coatings (thickness > 0,03 mm) at elevated temperatures, using the impulse excitation
method. Procedures for test piece preparation, test modes and rates (load rate or displacement), data
collection, and reporting procedures are given.
This document applies primarily to brittle ceramic coatings on ceramic or metal substrates. This
test method can be used for material research, quality control, and characterization and design data-
generation purposes.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 17561, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for elastic
moduli of monolithic ceramics at room temperature by sonic resonance
IEC 60584-1, Thermocouples — Part 1: EMF specifications and tolerances
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
elastic modulus
ratio of plane stress to plane strain
Note 1 to entry: Also known as Young’s modulus.
3.2
flexural vibrations
vibrations that occur when the displacements in a slender rod or bar are in a plane normal to the length
dimension
3.3
thickness ratio
ratio of the coating thickness to the substrate thickness
© ISO 2017 – All rights reserved 1

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ISO 20343:2017(E)

4 Principle
The elevated temperature elastic modulus of ceramic coatings on metal or ceramic substrates is
deduced by comparing the elastic moduli of coated and uncoated samples, under the precondition that
the interface between the coating and the substrate is continuous and without a debonding zone. The
elastic modulus of ceramic coatings can be calculated from three parameters, i.e. the elastic modulus
of the uncoated sample or substrate (E ), equivalent elastic modulus of the coated sample (E ), and the
s q
ratio of the coating thickness to the substrate thickness (R = h/H). The value of E and E are determined
q s
by the impulse excitation technique.
5 Apparatus
5.1 Elastic modulus testing machine
A suitable impulse excitation testing system capable of applying impulses at elevated temperatures
shall be used, which shall be in accordance with ISO 17561. Since the test piece is required by ISO 17561
to be homogeneous and isotropic, the measured modulus using the coated test piece is then described
as an equivalent elastic modulus.
5.2 Heating system
5.2.1 General
The heating system, usually a furnace, shall be capable of heating the test fixture and test piece and
maintaining a uniform and constant temperature during the impulse excitation test. The furnace shall
have the capability for containing air, inert gas, or a vacuum environment as required for the test.
5.2.2 Temperature stability
The furnace shall be controlled by a device capable of maintaining a constant temperature within ±2 °C
or better within its working space during the time when the elastic m
...

DRAFT INTERNATIONAL STANDARD
ISO/DIS 20343
ISO/TC 206 Secretariat: JISC
Voting begins on: Voting terminates on:
2016-02-11 2016-05-11
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for determining elastic modulus
of thick ceramic coating at elevated temperature
Titre manque
ICS: 81.060.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 20343:2016(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2016

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ISO/DIS 20343:2016(E) ISO/DIS 20343

Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle. 2
5 Apparatus . 2
5.1 Elastic modulus testing machine . 2
5.2 Heating system . 2
5.3 Temperature measuring and indicating instruments . 2
5.4 Dimension-measuring device . 3
5.5 Test fixture . 3
6 Test pieces . 3
6.1 Test piece size . 3
6.2 Test piece preparation and storage . 4
7 Test procedure . 5
7.1 Measurement of the size and mass of the test-pieces . 5
7.2 Measurement of elastic modulus of coating at elevated temperature . 5
8 Calculation of results . 6
8.1 Standard formula for elastic modulus of coating . 6
8.2 Mean value and standard deviation for elastic modulus . 7
8.3 Variation of elastic modulus with temperature . 8
9 Test report . 8

COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. [phone]
Fax [phone]
[e-mail]
www.iso.org
ii © ISO 2016 – All rights reserved
© ISO 2015 – All rights reserved iii

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ISO/DIS 20343
Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle. 2
5 Apparatus . 2
5.1 Elastic modulus testing machine . 2
5.2 Heating system . 2
5.3 Temperature measuring and indicating instruments . 2
5.4 Dimension-measuring device . 3
5.5 Test fixture . 3
6 Test pieces . 3
6.1 Test piece size . 3
6.2 Test piece preparation and storage . 4
7 Test procedure . 5
7.1 Measurement of the size and mass of the test-pieces . 5
7.2 Measurement of elastic modulus of coating at elevated temperature . 5
8 Calculation of results . 6
8.1 Standard formula for elastic modulus of coating . 6
8.2 Mean value and standard deviation for elastic modulus . 7
8.3 Variation of elastic modulus with temperature . 8
9 Test report . 8

© ISO 2015 – All rights reserved iii

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ISO/DIS 20343
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 through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 20343 was prepared by Technical Committee ISO/TC 206, Fine ceramics.
This second/third/. edition cancels and replaces the first/second/. edition (), [clause(s) / subclause(s) /
table(s) / figure(s) / annex(es)] of which [has / have] been technically revised.

iv © ISO 2015 – All rights reserved

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DRAFT INTERNATIONAL STANDARD ISO/DIS 20343

Fine ceramics (advanced ceramics, advanced technical
ceramics) — Test method for determining elastic modulus of
thick ceramic coating at elevated temperature
1 Scope
This standard specifies a method of test for determining the elastic modulus of thick ceramic monolayer
coatings (thickness﹥0,03 mm) at elevated temperatures, using the impulse excitation method. Procedures for
test piece preparation, test modes and rates (load rate or displacement), data collection, and reporting
procedures are given.
This International Standard applies primarily to brittle ceramic coatings on ceramic or metal substrates. This
test method can be used for material research, quality control, and characterization and design data-
generation purposes.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable to its application. For dated references, only the edition cited applies. For undated references,
the lasted edition of the referenced document (including any amendments) applies.
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 17561, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for elastic
moduli of monolithic ceramics at room temperature by sonic resonance
ISO 18558, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for determining
elastic modulus and bending strength of ceramic tube and rings
IEC 60584-1, Thermocouples-part 1:Reference tables
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
elastic modulus
ratio of plane stress to plane strain, also known as Young‘s modulus
3.2
flexural vibrations
vibrations that occur when the displacements in a slender rod or bar are in a plane normal to the length
dimension
© ISO 2015 – All rights reserved 1

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ISO/DIS 20343
3.3
thickness ratio
ratio of the coating thickness to the substrate thickness
4 Principle
The elevated temperature elastic modulus of ceramic coatings on metal or ceramic substrates is deduced by
comparing the elastic moduli of coated and uncoated samples, under the precondition that the interface
between the coating and the substrate is continuous and without a debonding zone. The elastic modulus of
ceramic coatings can be calculated from three parameters, viz. the elastic modulus of the uncoated sample or
substra
...