Fine ceramics (advanced ceramics, advanced technical ceramics) — Characteristic of piezoelectric properties under high-load conditions — Part 1: Resonant-antiresonant method under high-temperature conditions

This document specifies a method of measuring piezoelectric properties of piezoelectric fine ceramics and other piezoelectric devices under high-temperature conditions, where the electromechanical coupling coefficient is determined based on measurements of resonance/antiresonance frequencies using impedance analysers.

Céramiques techniques (céramiques avancées, céramiques techniques avancées) — Caractéristique des propriétés piézoélectriques en conditions de charge élevée — Partie 1: Méthode résonante-antirésonante à des températures élevées

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Status
Published
Publication Date
08-Aug-2018
Current Stage
6060 - International Standard published
Start Date
09-Aug-2018
Completion Date
09-Aug-2018
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ISO 21819-1:2018 - Fine ceramics (advanced ceramics, advanced technical ceramics) -- Characteristic of piezoelectric properties under high-load conditions
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INTERNATIONAL ISO
STANDARD 21819-1
First edition
2018-08
Fine ceramics (advanced ceramics,
advanced technical ceramics) —
Characteristic of piezoelectric
properties under high-load
conditions —
Part 1:
Resonant-antiresonant method under
high-temperature conditions
Céramiques techniques (céramiques avancées, céramiques techniques
avancées) — Caractéristique des propriétés piézoélectriques en
conditions de charge élevée —
Partie 1: Méthode résonante-antirésonante à des températures élevées
Reference number
ISO 21819-1:2018(E)
ISO 2018
---------------------- Page: 1 ----------------------
ISO 21819-1:2018(E)
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© ISO 2018

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may

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Published in Switzerland
ii © ISO 2018 – All rights reserved
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ISO 21819-1:2018(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols .......................................................................................................................................................................................................................... 2

5 Principle ........................................................................................................................................................................................................................ 2

6 Specimens .................................................................................................................................................................................................................... 2

7 Measurement equipment ............................................................................................................................................................................ 2

7.1 General ........................................................................................................................................................................................................... 2

7.2 Impedance analyser ............................................................................................................................................................................ 3

7.3 Thermostat chamber ......................................................................................................................................................................... 3

7.4 Thermocouple ......................................................................................................................................................................................... 3

7.5 Recorder ....................................................................................................................................................................................................... 3

7.6 Test piece holder ................................................................................................................................................................................... 4

8 Measurement conditions ............................................................................................................................................................................. 4

9 Measurement procedure .............................................................................................................................................................................. 4

10 Calculation procedures of measured results .......................................................................................................................... 5

10.1 Calculation of measurement data ........................................................................................................................................... 5

10.2 Rate of change of electromechanical coupling coefficient ......... ........................................................................ 5

11 Test report ................................................................................................................................................................................................................... 5

Annex A (informative) Example of a data evaluation .......................................................................................................................... 7

Bibliography ................................................................................................................................................................................................................................ 8

© ISO 2018 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 21819-1:2018(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

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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

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.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 206, Fine ceramics.
A list of all parts in the ISO 21819 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 21819-1:2018(E)
Fine ceramics (advanced ceramics, advanced technical
ceramics) — Characteristic of piezoelectric properties
under high-load conditions —
Part 1:
Resonant-antiresonant method under high-temperature
conditions
1 Scope

This document specifies a method of measuring piezoelectric properties of piezoelectric fine ceramics

and other piezoelectric devices under high-temperature conditions, where the electromechanical

coupling coefficient is determined based on measurements of resonance/antiresonance frequencies

using impedance analysers.
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.

IEC 60584-1, Thermocouples — Part 1: Reference tables
IEC 60584-2, Thermocouples — Part 2: Tolerances

EN 50324-1, Piezoelectric properties of ceramic materials and components — Part 1: Terms and definitions

EN 50324-2, Piezoelectric properties of ceramic materials and components — Part 2: Method of

measurement — Low power

EN 50324-3, Piezoelectric properties of ceramic materials and components — Part 3: Method of

measurement — High power
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN 50324-1, EN 50324-2 and

EN 50324-3 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1
resonant-antiresonant method

method where the ratio of mutual conversion between electrical energy and mechanical energy is

measured based on the resonance frequency and antiresonance frequency of piezoelectric fine ceramics

and other piezoelectric devices
© ISO 2018 – All rights reserved 1
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ISO 21819-1:2018(E)
3.2
resonance frequency

lower of two frequencies at which admittance or impedance between electrodes of a transducer

achieves zero phase in the vicinity of the target vibration mode
3.3
antiresonance frequency

higher of two frequencies at which admittance or impedance between electrodes of a transducer

achieves zero phase in the vicinity of the target vibration mode
4 Symbols
Δk(t) Rate of change of electromechanical coupling coefficient (%)

k Electromechanical coupling coefficient after holding for t min after the test piece reaches

the test temperature ± 2 °C
k Electro
...

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