ISO 23486:2021
(Main)Metallic and other inorganic coatings — Measurement of Young’s modulus of thermal barrier coatings at elevated temperature by flexural resonance method
Metallic and other inorganic coatings — Measurement of Young’s modulus of thermal barrier coatings at elevated temperature by flexural resonance method
This document specifies a method for measuring the in-plane Young’s modulus of thermal barrier coatings (TBCs) formed on substrates, from room temperature up to 1 000 °C.
Titre manque
General Information
Buy Standard
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 23486
First edition
2021-04
Metallic and other inorganic
coatings — Measurement of Young’s
modulus of thermal barrier coatings
at elevated temperature by flexural
resonance method
Reference number
ISO 23486:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 23486:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 23486:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus for measuring resonance frequency . 2
6 Specimen . 3
6.1 Shape and dimensions . 3
6.2 Preheat treatment . 4
7 Measuring procedure . 4
7.1 Dimension and mass of specimen . 4
7.2 Resonance frequency . . 5
8 Calculation of Young’s modulus . 6
8.1 General . 6
8.2 Young’s modulus of the substrate . 6
8.3 Young’s modulus of BC . 6
8.4 Young’s modulus of TC . 7
9 Test report . 7
Annex A (informative) An example of the apparatus for measuring the resonance frequency .9
Bibliography .10
© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 23486:2021(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 of the voluntary nature of standards, 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 www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings.
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 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 23486:2021(E)
Introduction
Thermal barrier coatings (TBCs) are highly advanced material systems, generally applied to surfaces
of hot-section components made of nickel or cobalt-based superalloys, such as combustors, blades and
vanes of power-generation gas turbines in thermal power plants and aero-engines operated at elevated
temperatures.
The function of these coatings is to protect metallic components for extended periods at elevated
temperatures by employing thermally insulating materials which can sustain an appreciable
temperature difference between load-bearing alloys and coating surfaces. These coatings permit the
high-temperature operation by shielding these components, thereby extending their lives.
Although Young’s modulus is an important property of TBCs, the existing ISO 19477 only describes a
method for measuring this parameter at room temperature.
This document specifies a method for measuring the Young’s modulus of TBCs that consist of multilayers
formed on substrate by thermal spraying, from room temperature up to elevated temperature.
© ISO 2021 – All rights reserved v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 23486:2021(E)
Metallic and other inorganic coatings — Measurement of
Young’s modulus of thermal barrier coatings at elevated
temperature by flexural resonance method
1 Scope
This document specifies a method for measuring the in-plane Young’s modulus of thermal barrier
coatings (TBCs) formed on substrates, from room temperature up to 1 000 °C.
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 1463, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 13385 (all parts), Geometrical product specifications (GPS) — Dimensional measuring equipment
ISO 14188:2012, Metallic and other inorganic coatings — Test methods for measuring thermal cycle
resistance and thermal shock resistance for thermal barrier coatings
ISO 17561:2016, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for
elastic moduli of monolithic ceramics at room temperature by sonic resonance
ISO 19477, Metallic and other inorganic coatings — Measurement of Young's modulus of thermal barrier
coatings by beam bending
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14188 and ISO 19477 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
thermal barrier coating
TBC
two-layer coating consisting of a metallic bond coat (BC) and a ceramic top coat (TC), in ord
...
INTERNATIONAL ISO
STANDARD 23486
First edition
Metallic and other inorganic
coatings — Measurement of Young’s
modulus of thermal barrier coatings
at elevated temperature by flexural
resonance method
PROOF/ÉPREUVE
Reference number
ISO 23486:2021(E)
©
ISO 2021
---------------------- Page: 1 ----------------------
ISO 23486:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 23486:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus for measuring resonance frequency . 2
6 Specimen . 3
6.1 Shape and dimensions . 3
6.2 Preheat treatment . 4
7 Measuring procedure . 4
7.1 Dimension and mass of specimen . 4
7.2 Resonance frequency . . 5
8 Calculation of Young’s modulus . 6
8.1 General . 6
8.2 Young’s modulus of the substrate . 6
8.3 Young’s modulus of BC . 6
8.4 Young’s modulus of TC . 7
9 Test report . 7
Annex A (informative) An example of the apparatus for measuring the resonance frequency .9
Bibliography .10
© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 23486:2021(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 of the voluntary nature of standards, 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 www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings.
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 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 23486:2021(E)
Introduction
Thermal barrier coatings (TBCs) are highly advanced material systems, generally applied to surfaces
of hot-section components made of nickel or cobalt-based superalloys, such as combustors, blades and
vanes of power-generation gas turbines in thermal power plants and aero-engines operated at elevated
temperatures.
The function of these coatings is to protect metallic components for extended periods at elevated
temperatures by employing thermally insulating materials which can sustain an appreciable
temperature difference between load-bearing alloys and coating surfaces. These coatings permit the
high-temperature operation by shielding these components, thereby extending their lives.
Although Young’s modulus is an important property of TBCs, the existing ISO 19477 only describes a
method for measuring this parameter at room temperature.
This document specifies a method for measuring the Young’s modulus of TBCs that consist of multilayers
formed on substrate by thermal spraying, from room temperature up to elevated temperature.
© ISO 2021 – All rights reserved PROOF/ÉPREUVE v
---------------------- Page: 5 ----------------------
INTERNATIONAL STANDARD ISO 23486:2021(E)
Metallic and other inorganic coatings — Measurement of
Young’s modulus of thermal barrier coatings at elevated
temperature by flexural resonance method
1 Scope
This document specifies a method for measuring the in-plane Young’s modulus of thermal barrier
coatings (TBCs) formed on substrates, from room temperature up to 1 000 °C.
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 1463, Metallic and oxide coatings — Measurement of coating thickness — Microscopical method
ISO 3611, Geometrical product specifications (GPS) — Dimensional measuring equipment: Micrometers for
external measurements — Design and metrological characteristics
ISO 13385 (all parts), Geometrical product specifications (GPS) — Dimensional measuring equipment
ISO 14188:2012, Metallic and other inorganic coatings — Test methods for measuring thermal cycle
resistance and thermal shock resistance for thermal barrier coatings
ISO 17561:2016, Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for
elastic moduli of monolithic ceramics at room temperature by sonic resonance
ISO 19477, Metallic and other inorganic coatings — Measurement of Young's modulus of thermal barrier
coatings by beam bending
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 14188 and ISO 19477 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
thermal barrier coating
TBC
two-layer coating consisting of a metallic bond coat (BC) and a ceramic top coat (TC), in order to reduce
heat transfer from outside th
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.