SIST EN ISO 2819:2018
(Main)Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesion (ISO 2819:2017)
Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesion (ISO 2819:2017)
This document specifies methods of checking the adhesion of electrodeposited and chemically
deposited coatings. It is limited to tests of a qualitative nature.
This document does not describe certain tests that have been developed at various times to give a
quantitative measure of adhesion of metallic coating to a substrate, since such tests require special
apparatus and considerable skill in their performance which renders them unsuitable as quality control
tests for production parts. Some of these quantitative tests can, however, be useful in research and
development work.
Metallische Überzüge auf metallischen Grundwerkstoffen - Galvanische und chemische Überzüge - Überblick über Methoden der Haftfestigkeitsprüfung (ISO 2819:2017)
Dieses Dokument legt Prüfverfahren für die Haftfestigkeit galvanisch und chemisch abgeschiedener Überzüge fest. Es ist auf Prüfungen qualitativer Natur beschränkt.
Dieses Dokument beschreibt nicht die Prüfungen, die zu verschiedenen Zeiten zur quantitativen Messung der Haftfestigkeit metallischer Überzüge auf einem Substrat entwickelt wurden; diese Prüfungen erfordern spezielle Geräte und ein beachtliches Können bei Ihrer Durchführung, und das macht sie als Prüfungen zur Qualitätskontrolle von Produktionsteilen ungeeignet. Einige dieser quantitativen Prüfungen können jedoch in der Forschungs- und Entwicklungsarbeit von Nutzen sein.
Revêtements métalliques sur bases métalliques - Dépôts électrolytiques et dépôts par voie chimique - Liste des différentes méthodes d'essai d'adhérence (ISO 2819:2017)
ISO 2819:2017 spécifie des méthodes de vérification de l'adhérence des dépôts électrolytiques et des dépôts effectués par voie chimique. Il se limite aux essais de nature qualitative.
ISO 2819:2017 ne décrit pas certains essais mis au point à différentes occasions pour effectuer un mesurage quantitatif de l'adhérence d'un revêtement métallique à un matériau de base, ces essais nécessitant un appareillage spécial et une manipulation experte les rendant impropres en tant qu'essais de contrôle de qualité pour pièces de série. Certains de ces essais quantitatifs sont néanmoins utiles pour les travaux de recherche théorique ou appliquée.
Kovinske prevleke na kovinskih podlagah - Galvansko in kemično nanesene prevleke - Pregled metod za preskus adhezivnosti (ISO 2819:2017)
Ta dokument določa metode preverjanja sprijemnosti elektrogalvanskih in kemično nanesenih prevlek. Omejuje se na kvalitativne preskuse.
Ta dokument ne opisuje določenih preskusov, ki so bili razviti v različnih trenutkih za kvantitativno merjenje sprijemnosti kovinske prevleke na podlago, saj je za takšne preskuse potrebno posebno orodje in ustrezno poznavanje njihove uporabe, zato niso primerni kot preskusi za nadziranje kakovosti proizvodnih delov. Nekatere od teh kvantitativnih preskusov pa je kljub temu mogoče uporabiti v raziskovalnem in razvojnem delu.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2819:2018
01-maj-2018
1DGRPHãþD
SIST EN ISO 2819:1999
.RYLQVNHSUHYOHNHQDNRYLQVNLKSRGODJDK*DOYDQVNRLQNHPLþQRQDQHVHQH
SUHYOHNH3UHJOHGPHWRG]DSUHVNXVDGKH]LYQRVWL ,62
Metallic coatings on metallic substrates - Electrodeposited and chemically deposited
coatings - Review of methods available for testing adhesion (ISO 2819:2017)
Metallische Überzüge auf metallischen Grundwerkstoffen - Galvanische und chemische
Überzüge - Überblick über Methoden der Haftfestigkeitsprüfung (ISO 2819:2017)
Revêtements métalliques sur bases métalliques - Dépôts électrolytiques et dépôts par
voie chimique - Liste des différentes méthodes d'essai d'adhérence (ISO 2819:2017)
Ta slovenski standard je istoveten z: EN ISO 2819:2018
ICS:
25.220.40 Kovinske prevleke Metallic coatings
SIST EN ISO 2819:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 2819:2018
---------------------- Page: 2 ----------------------
SIST EN ISO 2819:2018
EN ISO 2819
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2018
EUROPÄISCHE NORM
ICS 25.220.40 Supersedes EN ISO 2819:1994
English Version
Metallic coatings on metallic substrates - Electrodeposited
and chemically deposited coatings - Review of methods
available for testing adhesion (ISO 2819:2017)
Revêtements métalliques sur bases métalliques - Metallische Überzüge auf metallischen
Dépôts électrolytiques et dépôts par voie chimique - Grundwerkstoffen - Galvanische und chemische
Liste des différentes méthodes d'essai d'adhérence Überzüge - Überblick über Methoden der
(ISO 2819:2017) Haftfestigkeitsprüfung (ISO 2819:2017)
This European Standard was approved by CEN on 1 December 2017.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2819:2018 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 2819:2018
EN ISO 2819:2018 (E)
Contents Page
European foreword . 3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 2819:2018
EN ISO 2819:2018 (E)
European foreword
This document (EN ISO 2819:2018) has been prepared by Technical Committee ISO/TC 107 “Metallic
and other inorganic coatings” in collaboration with Technical Committee CEN/TC 262 “Metallic and
other inorganic coatings, including for corrosion protection and corrosion testing of metals and alloys”
the secretariat of which is held by BSI.
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 September 2018, and conflicting national standards
shall be withdrawn at the latest by September 2018.
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 ISO 2819:1994.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2819:2017 has been approved by CEN as EN ISO 2819:2018 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 2819:2018
---------------------- Page: 6 ----------------------
SIST EN ISO 2819:2018
INTERNATIONAL ISO
STANDARD 2819
Third edition
2017-11
Metallic coatings on metallic
substrates — Electrodeposited and
chemically deposited coatings —
Review of methods available for
testing adhesion
Revêtements métalliques sur bases métalliques — Dépôts
électrolytiques et dépôts par voie chimique — Liste des différentes
méthodes d'essai d'adhérence
Reference number
ISO 2819:2017(E)
©
ISO 2017
---------------------- Page: 7 ----------------------
SIST EN ISO 2819:2018
ISO 2819:2017(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. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 2819:2018
ISO 2819:2017(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Methods of test . 1
4.1 Burnishing test . 1
4.2 Ball burnishing test . 2
4.3 Shot peening test . 2
4.4 Peel test . 2
4.5 File test . . 2
4.6 Grinding and sawing tests . 3
4.7 Chisel test. 3
4.8 Scribe and grid test. 3
4.9 Bending test . 3
4.10 Twisting (winding) test . 4
4.11 Tensile test . 4
4.11.1 Tensile test as qualitative test as a measure of adhesion in terms of
a classification . 4
4.11.2 Tensile test as quantitative test for the determination of assembly
2 4
strength in N/mm . .
4.12 Thermal shock test . 4
4.13 Drawing test . 5
4.14 Cathodic test . 5
4.15 Rockwell-C test . 5
4.16 Scratch-test. 6
4.17 Cavitation test . 6
5 Summary . 6
Annex A (informative) Determination of adhesion of silver deposits (100 µm to 600 µm):
shot-peening method . 8
Bibliography .11
© ISO 2017 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 2819:2018
ISO 2819:2017(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 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 the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by the European Committee for Standardization (CEN) Technical
Committee CEN/TC 262, Metallic and other inorganic coatings, including for corrosion protection and
corrosion testing of metals and alloys, in collaboration with ISO Technical Committee TC 107, Metallic and
other inorganic coatings, in accordance with the agreement on technical cooperation between ISO and
CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 2819:1980), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— tensile test has been extended by centrifugal adhesion testing;
— Rockwell-C test has been added;
— scratch test has been added;
— cavitation test has been added;
— editorial changes and informative references to further existing standards have been made.
iv © ISO 2017 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 2819:2018
INTERNATIONAL STANDARD ISO 2819:2017(E)
Metallic coatings on metallic substrates —
Electrodeposited and chemically deposited coatings —
Review of methods available for testing adhesion
WARNING — When particular methods of adhesion testing are included in International
Standards for individual coatings, they should be used in preference to the methods described
in this document and should be agreed upon beforehand by the supplier and the purchaser.
1 Scope
This document specifies methods of checking the adhesion of electrodeposited and chemically
deposited coatings. It is limited to tests of a qualitative nature.
This document does not describe certain tests that have been developed at various times to give a
quantitative measure of adhesion of metallic coating to a substrate, since such tests require special
apparatus and considerable skill in their performance which renders them unsuitable as quality control
tests for production parts. Some of these quantitative tests can, however, be useful in research and
development work.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
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
4 Methods of test
4.1 Burnishing test
If plated parts are subjected to burnishing in a localized area, the deposit will tend to work-harden and
absorb frictional heat. If the coating is thin, separation of the coating from the basis metal as blisters
will occur under these conditions in areas of poor adhesion.
2
When the shape and size of the part permit, an area of not more than 6 cm of the plated surface should
be rubbed with a smooth implement for about 15 s. A suitable implement is a steel rod 6 mm in diameter
with a smooth hemispherical end.
The pressure shall be sufficient to burnish the coating at every stroke but not so great as to cut the
coating. Poor adhesion is indicated by the appearance of a blister which grows as the rubbing is
continued.
If the mechanical properties of the coating are poor, the blister may crack and the coating will peel from
the basis metal. This test shall be limited to relatively thin deposits.
© ISO 2017 – All rights reserved 1
---------------------- Page: 11 ----------------------
SIST EN ISO 2819:2018
ISO 2819:2017(E)
4.2 Ball burnishing test
Ball burnishing is frequently used for polishing, but it can be used also to test adhesion. Using a barrel
or vibratory burnisher with steel balls about 3 mm in diameter and soap solution as lubricant, it is
possible to produce blisters when the adhesion is very poor. The method is suitable for relatively thin
deposits.
4.3 Shot peening test
There are some variations of the principle by which the hammering action of iron or steel balls, allowed
to fall by gravity or forced by means of a pressure air stream onto the surface to be tested, produces
deformation of the deposit.
If the coating is poorly bonded, it will become blistered. Usually, the intensity of peening necessary to
cause non-adherent coatings to blister varies with the coating thickness, thin coatings requiring less
than thick coatings.
One test can be performed using a tube 150 mm long, with 19 mm internal diameter, as the reservoir
for round iron or steel shot (0,75 mm diameter approximately) connected to a nozzle. Compressed air
1)
is brought to the apparatus with a pressure of 0,07 MPa to 0,21 MPa and the distances between the
nozzle and the specimen are 3 mm to 12 mm.
Another test, that appears to be the most suitable for checking the adhesion of electroplated coatings of
silver during production of coatings from 100 μm to 600 μm in thickness, is described in Annex A and
employs a standard air-operated cabinet of the type used for shot-peening steel parts.
If the silver is poorly bonded, it will extend or flow and become blistered.
4.4 Peel test
This test is suitable for coatings less than 125 μm thick on substantially flat surfaces. A strip of tinned
mild steel or brass, approximately 75 mm long × 10 mm wide × 0,5 mm thick, is bent at right angles
10 mm from one end and the shorter limb soldered flat to the coated surface. A load is applied to the
free limb and normal to the solder
...
SLOVENSKI STANDARD
oSIST prEN ISO 2819:2016
01-november-2016
.RYLQVNHSUHYOHNHQDNRYLQVNLKSRGODJDK*DOYDQVNRLQNHPLþQRQDQHVHQH
SUHYOHNH3UHJOHGPHWRG]DSUHVNXVDGKH]LYQRVWL ,62',6
Metallic coatings on metallic substrates - Electrodeposited and chemically deposited
coatings - Review of methods available for testing adhesion (ISO/DIS 2819:1:2016)
Metallische Überzüge auf metallischen Grundwerkstoffen - Galvanische und chemische
Überzüge - Überblick über Methoden der Haftfestigkeitsprüfung (ISO/DIS 2819:1:2016)
Revêtements métalliques sur bases métalliques -- Dépôts électrolytiques et dépôts par
voie chimique -- Liste des différentes méthodes d_essai d_adhérence (ISO/DIS
2819:1:2016)
Ta slovenski standard je istoveten z: prEN ISO 2819
ICS:
25.220.40 Kovinske prevleke Metallic coatings
oSIST prEN ISO 2819:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 2819:2016
---------------------- Page: 2 ----------------------
oSIST prEN ISO 2819:2016
DRAFT INTERNATIONAL STANDARD
ISO/DIS 2819
ISO/TC 107 Secretariat: KATS
Voting begins on: Voting terminates on:
2016-09-16 2016-12-08
Metallic coatings on metallic substrates —
Electrodeposited and chemically deposited coatings —
Review of methods available for testing adhesion
Revêtements métalliques sur bases métalliques — Dépôts électrolytiques et dépôts par voie chimique —
Liste des différentes méthodes d’essai d’adhérence
ICS: 25.220.40
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
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
ISO/CEN PARALLEL PROCESSING
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 2819:2016(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
---------------------- Page: 3 ----------------------
oSIST prEN ISO 2819:2016
ISO/DIS 2819:2016(E)
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. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 2819:2016
ISO/DIS 2819:2016(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Methods of test . 1
4.1 Burnishing test . 1
4.2 Ball burnishing test . 2
4.3 Shot peening test . 2
4.4 Peel test . 2
4.5 File test . . 3
4.6 Grinding and sawing tests . 3
4.7 Chisel test. 3
4.8 Scribe and grid test. 3
4.9 Bending test . 3
4.10 Twisting (winding) test . 4
4.11 Tensile test . 4
4.11.1 Tensile test as qualitative test as a measure of adhesion in terms of a
classification:. 4
4.11.2 Tensile test as quantitative test for the determination of adhesive strength
2
in N/mm : . 4
4.12 Thermal shock test . 4
4.13 Drawing test . 5
4.14 Cathodic test . 5
4.15 Rockwell-C test . 6
4.16 Scratch-test. 6
4.17 Cavitation test . 6
5 Summary . 6
Annex A (informative) Determination of adhesion of silver deposits (100 to 600 µm) —
Shot-peening method . 7
Bibliography .10
© ISO 2016 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 2819:2016
ISO/DIS 2819:2016(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.
The committee responsible for this document is ISO/TC 107
iv © ISO 2016 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 2819:2016
DRAFT INTERNATIONAL STANDARD ISO/DIS 2819:2016(E)
Metallic coatings on metallic substrates —
Electrodeposited and chemically deposited coatings —
Review of methods available for testing adhesion
1 Scope
This International Standard describes methods of checking the adhesion of electrodeposited and
chemically deposited coatings. It is limited to tests of a qualitative nature. Table 2 indicates the
suitability of each test for some of the most usual types of metallic coatings. Most of the tests described
are capable of destroying both the coating and the article being tested, but some destroy the coating
only. Even if the adhesion of the coating is found to be satisfactory on articles not destroyed in testing,
it should not be assumed that the articles are undamaged. For example, the burnishing test (see 2.1)
may render an article unacceptable and the thermal shock test (see 2.12) may produce unacceptable
metallurgical changes.
This International Standard does not describe certain tests which have been developed at various times
to give a quantitative measure of adhesion of metallic coating to a substrate since such tests require
special apparatus and considerable skill in their performance which renders them unsuitable as quality
control tests for production parts. Some of these quantitative tests may, however, be useful in research
and development work.
WARNING — When particular methods of adhesion testing are included in International
Standards for individual coatings, they should be used in preference to the methods described
in this International Standard and should be agreed upon beforehand by the supplier and the
purchaser.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Methods of test
4.1 Burnishing test
If plated parts are subjected to burnishing in a localized area, the deposit will tend to work‑harden and
absorb frictional heat. If the coating is thin, separation of the coating from the basis metal as blisters
will occur under these conditions in areas of poor adhesion.
2
When the shape and size of the part permit, an area of not more than 6 cm of the plated surface should
be rubbed with a smooth implement for about 15 s. A suitable implement is a steel rod 6 mm in diameter
with a smooth hemispherical end.
© ISO 2016 – All rights reserved 1
---------------------- Page: 7 ----------------------
oSIST prEN ISO 2819:2016
ISO/DIS 2819:2016(E)
The pressure shall be sufficient to burnish the coating at every stroke but not so great as to cut the
coating. Poor adhesion is indicated by the appearance of a blister which grows as the rubbing is
continued.
If the mechanical properties of the coating are poor, the blister may crack and the coating will peel from
the basis metal. This test shall be limited to relatively thin deposits.
4.2 Ball burnishing test
Ball burnishing is frequently used for polishing, but it can be used also to test adhesion. Using a barrel
or vibratory burnisher with steel balls about 3 mm in diameter and soap solution as lubricant, it is
possible to produce blisters when the adhesion is very poor. The method is suitable for relatively thin
deposits.
4.3 Shot peening test
There are some variations of the principle by which the hammering action of iron or steel balls, allowed
to fall by gravity or forced by means of a pressure air stream onto the surface to be tested, produces
deformation of the deposit.
If the coating is poorly bonded, it will become blistered. Usually, the intensity of peening necessary to
cause non-adherent coatings to blister varies with the coating thickness, thin coatings requiring less
than thick coatings.
One test can be performed using a tube 150 mm long, 19 mm internal diameter, as the reservoir for
round iron or steel shot (0,75 mm diameter approximately) connected to a nozzle. Compressed air is
1)
brought to the apparatus with a pressure of 0,07 to 0,21 MPa and the distances between nozzle and
specimen are 3 to 12 mm.
Another test, that appears to be the most suitable for checking the adhesion of electroplated coatings
of silver during production of coatings from 100 to 600 μm in thickness, is described in the annex and
employs a standard air‑operated cabinet of the type used for shot‑peening steel parts.
If the silver is poorly bonded, it will extend or flow and become blistered.
4.4 Peel test
This test is suitable for coatings less than 125 μm thick on substantially flat surfaces. A strip of tinned
mild steel or brass, approximately 75 mm long × 10 mm wide × 0,5 mm thick, is bent at right angles
10 mm from one end and the shorter limb soldered flat to the coated surface. A load is applied to the
free limb and normal to the soldered surface. The coating will be detached from the substrate if the
adhesion is weaker than the soldered joint. If the adhesion of the coating is greater than this, however,
failure will occur in the soldered joint or within the thickness of the coating.
This method is not widely used because the temperature reached during the soldering operation might
alter the adhesion. Alternatively, the test can be performed using an adhesive of hard‑setting synthetic
resin of adequate tensile strength in place of solder.
Another test (the tape test) employs an adhesive cellulose tape, with an adhesion value of approximately
8 N per 25 mm width, whose adhesive side is applied to the coating under test, using a fixed‑weight roller,
care being taken to exclude all air bubbles. After an interval of 10 s, the tape is removed by applying a
steady pulling force to the tape, perpendicular to the surface of the coating. The adhesion of the coating
shall be such that there is no evidence of detachment of the coating. This test is particularly used for
testing adhesion of coatings on the conductors and contacts of printed circuits. Coated conductors shall
2
be tested over an area of at lea
...
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