EN ISO 2819-2018 en Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesion.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Metallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesionBS EN ISO 2819:2018National forewordThis British Standard is the UK impleme

2、ntation of EN ISO 2819:2018. It is identical to ISO 2819:2017. It supersedes BS EN ISO 2819:1995, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/33, Electrodeposited and related coatings.A list of organizations represented on this committee can be

3、 obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 93621 0ICS 25.220.40Complianc

4、e with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 2819:2018EUROPEAN

5、 STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 2819March 2018ICS 25.220.40 Supersedes EN ISO 2819:1994EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 2819:2018:

6、EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersMetallic coatings on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesion (ISO 2819:2017)Revtements mtalliques sur bases mtalliqu

7、es - Dpts lectrolytiques et dpts par voie chimique - Liste des diffrentes mthodes dessai dadhrence (ISO 2819:2017)Metallische berzge auf metallischen Grundwerkstoffen - Galvanische und chemische berzge - berblick ber Methoden der Haftfestigkeitsprfung (ISO 2819:2017)This European Standard was approv

8、ed 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 s

9、tandards 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

10、 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

11、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 2819:2018 (E)European forewordThis document (EN ISO 2819:2018) has been prepared by

12、 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 St

13、andard 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 element

14、s 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 bou

15、nd 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, Portuga

16、l, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 2819:2017 has been approved by CEN as EN ISO 2819:2018 without any modification.2BS EN ISO 2819:2018ISO 2819:2017Foreword iv1 Scope . 12 Normative references 13 Terms a

17、nd definitions . 14 Methods of test . 14.1 Burnishing test 14.2 Ball burnishing test . 24.3 Shot peening test . 24.4 Peel test . 24.5 File test . 24.6 Grinding and sawing tests . 34.7 Chisel test. 34.8 Scribe and grid test 34.9 Bending test . 34.10 Twisting (winding) test . 44.11 Tensile test 44.11.

18、1 Tensile test as qualitative test as a measure of adhesion in terms of a classification 44.11.2 Tensile test as quantitative test for the determination of assembly strength in N/mm2. 44.12 Thermal shock test 44.13 Drawing test 54.14 Cathodic test 54.15 Rockwell-C test . 54.16 Scratch-test. 64.17 Ca

19、vitation test 65 Summary . 6Annex A (informative) Determination of adhesion of silver deposits (100 m to 600 m): shot-peening method . 8Bibliography .11 ISO 2017 All rights reserved iiiContents PageBS EN ISO 2819:2018ISO 2819:2017ForewordISO (the International Organization for Standardization) is a

20、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

21、 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 th

22、is 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 D

23、irectives, 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 dev

24、elopment 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 nat

25、ure of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs 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 docume

26、nt 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

27、 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 ha

28、s 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 reservedBS EN ISO 2819:2018Metallic coatings

29、on metallic substrates - Electrodeposited and chemically deposited coatings - Review of methods available for testing adhesionWARNING When particular methods of adhesion testing are included in International Standards for individual coatings, they should be used in preference to the methods describe

30、d in this document and should be agreed upon beforehand by the supplier and the purchaser.1 ScopeThis 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 test

31、s 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

32、 quantitative tests can, however, be useful in research and development work.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsNo terms and definitions are listed in this document.ISO and IEC maintain terminological databases for use in standardization a

33、t the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp4 Methods of test4.1 Burnishing testIf plated parts are subjected to burnishing in a localized area, the deposit will tend to work-harden and absorb f

34、rictional 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.When the shape and size of the part permit, an area of not more than 6 cm2of the plated surface should be rubbed with a smooth implement for

35、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 con

36、tinued.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.INTERNATIONAL STANDARD ISO 2819:2017 ISO 2017 All rights reserved 1BS EN ISO 2819:2018ISO 2819:20174.2 Ball burnis

37、hing testBall 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

38、 for relatively thin deposits.4.3 Shot peening testThere 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

39、 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

40、the reservoir for round iron or steel shot (0,75 mm diameter approximately) connected to a nozzle. Compressed air is brought to the apparatus with a pressure of 0,07 MPa to 0,21 MPa1)and the distances between the nozzle and the specimen are 3 mm to 12 mm.Another test, that appears to be the most sui

41、table for checking the adhesion of electroplated coatings of silver during production of coatings from 100 m to 600 m 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

42、 and become blistered.4.4 Peel testThis test is suitable for coatings less than 125 m 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 co

43、ated 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

44、 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 (t

45、he 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 applyin

46、g 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. Coa

47、ted conductors shall be tested over an area of at least 30 mm2.4.5 File testA piece sawn off a coated article is held in a vice and a coarse mill file (one set of serrations only) is applied to the cut in such a manner as to attempt to raise the coating. The file is used in the direction from the ba

48、sis metal to the coating at an angle of approximately 45 to the coated surface. No detachment of the coating shall occur. This test is not suitable for very thin coatings and for soft coatings such as zinc or cadmium.NOTE See also ASTM B571.1) 1 MPa = 1 MN/m2.2 ISO 2017 All rights reservedBS EN ISO

49、2819:2018ISO 2819:20174.6 Grinding and sawing testsGrind an edge of the coated specimen with a grinding wheel with the direction of cutting from the basis metal to the deposit. If adhesion is poor, the deposit is torn from the base. A hacksaw can be substituted for the grinder. It is important to saw in such a direction that a force is applied that tends to separate the coating from the basis metal. Grinding and sawing tests are especially effective on harder coatings such as nickel and chromium.NOTE See also ASTM B571.4.7 Chise