1、BS EN ISO26443:2016ICS 81.060.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISHSTANDARDFineceramics(advancedceramics,advancedtechnicalceramics)Rockwellindentationtestforevaluationofadhesionofceramiccoatings(ISO 26443:2008)National forewordThis British Standard is the UK
2、 implementation of EN ISO 26443:2016. It is identical to ISO 26443:2008. It supersedes DD CEN/TS 1071-8:2004The UK participation in its preparation was entrusted to Technical Committee RPI/13, Advanced technical ceramics.A list of organizations represented on this committee can be obtained on reques
3、t to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 26443:2016This British Standardwas published under
4、theauthority of the StandardsPolicy and StrategyCommittee on 31 July 2008 The British Standards Institution 2016. Published by BSI Standards Limited 2016Amendments/corrigenda issued since publicationDate Comments 31 August 2016 This corrigendum renumbers BS ISO 26443:2008 as BS EN ISO 26443:2016ISBN
5、 978 0 580 91176 7and BS ISO 26443:2008 which are withdrawn.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 26443 April 2016 ICS 81.060.30 Supersedes CEN/TS 1071-8:2004English Version Fine ceramics (advanced ceramics, advanced technical ceramics) - Rockwell indentation test for evaluation o
6、f adhesion of ceramic coatings (ISO 26443:2008) Cramiques techniques - valuation de ladhrence des revtements cramiques par lessai de pntration Rockwell (ISO 26443:2008) Hochleistungskeramik - Rockwell-Eindringprfung zur Bewertung der Haftung von keramischen Schichten (ISO 26443:2008) This European S
7、tandard was approved by CEN on 18 March 2016. 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 concernin
8、g 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 it
9、s 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, Germa
10、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N
11、ORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 26443:2016 E3 European foreword The text of ISO 26443:2008 has been prepared by Technical Committee IS
12、O/TC 206 “Fine ceramics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 26443:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by DIN. This European Standard shall be given the status of a national st
13、andard, either by publication of an identical text or by endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent righ
14、ts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN/TS 1071-8:2004. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta
15、ndard: 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, Slovakia, Slovenia, S
16、pain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 26443:2008 has been approved by CEN as EN ISO 26443:2016 without any modification. BS EN ISO 26443:2016 EN ISO 26443:2016 (E) ISO 2008 All rights reserved iiiForeword ISO (the International Organization for
17、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 tec hnical committee has beenestablished has the r
18、ight to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closelywith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Internationa
19、l 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 Standardsadopted by the technical committees are ci rculated to the member bodies for voting. Public ation as
20、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 an y or all such patent rights. IS
21、O 26443 was prepared by Technical Committee ISO/TC 206, Fine ceramics . BS EN ISO 26443:2016 ISO 26443:2008 (E)BS EN ISO 26443:2016 ISO 26443:2008 (E)INTERNATIONAL STANDARD ISO 2008 All rights reserved 1Fine ceramics (advanced ceramics, advanced technical ceramics) Rockwell indentation test for eval
22、uation of adhesion of ceramic coatings 1 Scope This International Standard specifies a method for the qualitative evaluationof the adhesion of ceramic coatings up to 20m thick by indentation with a Rockwell diamond indenter. The for mation of cracks afterindentation may also reveal cohesive failure.
23、 The indentations are made with a Rockwell hardness testinstrument. The method described in this International Standardmay also be suitable for evaluating the adhesion of metallic coatings. The test is not suitable for elastic coatings on hard substrates. 2 NormativereferencesThe following reference
24、d documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of the referenceddocument (including any amendments) applies.ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Testmethod(sc
25、ales A, B, C, D, E, F, G, H,K, N, T)ISO 6508-2, Metallic materials Rockwell hardness test Part2: Verification a nd calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T)3 Principle An indentation is made into the coated surface of the specimen to be tested, whereby the coating near
26、 theindent can be damaged. The indentation and surrounding area are examined for cracks and/or flaking with the aid of an optical microscope. 4 Apparatus The indentations shall be made in accordance with ISO 6508-1, following the procedure for a Rockwellhardness indentation. The Rockwell hardness te
27、sting machine shall conformwith the requirements of ISO 6508-2.The contour of the diamond indenter shall be checked regularlybyoptical means (magnifying glass, optical microscope, stereomicroscope orprojection screen).This check shall be made for at least four different axial sections. The indenter
28、shall be replaced if this examination reveals any damage to the indenter (e.g. chipping).A magnification of at least 200 is recommended to detect ring cracks ormicrowear.BS EN ISO 26443:2016 ISO 26443:2008 (E)2 ISO 2008 All rights reservedAlthough a research project to evaluate the eff ect of indent
29、ation parameters showed no major influence of load rate or holding time on the results (see Reference 1), they should preferably be kept constant forreasons of repeatability. To conform with ISO6508-1, it is necess ary to keep the loading time betwee n 1 s and 8 s and the hold time at (4 2) s. Neith
30、er loading time nor holding time need to be recorded. 5 Sampling and preparation of test specimens Select a representative test specimen from the coating to be tested. Clean the specimen so that it is free fromdust and other particles, and also f rom oil or other surface films.6 Procedure The indent
31、ation shall bemade in a direction perpendicular to the specimen surface. Therefore specimensshall be prepared plane parallel and/or levelled before indentation. Depending on the coating/substrate combination, a suitable load range shall be selected. The following rules shall apply: formetallic subst
32、rates harder than 54 HRC, a load of 1 471,5 N (150 kgf) shall be used (Rockwell C scale); formetallic substrates softer than 54 HRC and for medium case-hardened steel substrates, a load of981 N (100 kgf) shall be used (Rockwell D scale); for all other substrates, e.g. shallow case-hardened steel, th
33、in substrates, cemented carbides, solidceramics and cermets, a load of 588,6 N (60 kgf) shall be used (Rockwell A scale).Using an optical microscope (magnification 100), relate the indentation to the classification given in Table 1.A pictorial representation and sample photographs of these classes c
34、an be found in Annex A. Table 1 Classificationof test results Class Observation Class 0 No cracking and no adhesivedelamination Class 1 Cracking without adhesive delamination of the coating Class 2 Partial adhesive delamination,with or without crackingClass 3 Complete adhesive delamination Class0 re
35、veals acceptable adhesion. However, the absence of any visual failure can be due to the test not being suitable for the substrate/coating system under investigation. Class1 shows no adhesive delamination;adhesion is acceptable. In the cases of class 2 and class 3, adhesion is unacceptable. The test
36、may also revealcohesive failure of the coating, e.g. cracking. The observation of cracks can befacilitated by using optical contrasting techniques, e.g. Nomarski interference contrast microscopy. Delamination can be due to adhesive as well as cohesive failure of the coating: Adhesive delamination is
37、defined as a removal of the coating, whereby the underlying substrate can be clearly seen, or a removal of one or more sublayers in a multilayer coating, whereby the substrate or anunderlying sublayer can be clearly distinguished. BS EN ISO 26443:2016 ISO 26443:2008 (E) ISO 2008 All rights reserved
38、3 Cohesive delamination is defined as a partial removal of the coating,whereby the underlying substrate stays covered by the coatin g, or a removal of one or more sub layers in a multilayer coating, whereby the substrate and none of the underlying sublayers can be clearly distinguished. Complete del
39、amination is defined as an uninterrupted removal of the coating along the circumference of the indent: When a class2 failure isobserved, an estimate of the percentage of delamination in relation to the surface area of the indent shall be given. T his estimate shall be based on the s um of the calcul
40、ated areasof each individual delamination, determined from its dimensions. A micrograph of a typical class 2 failurecan be found in Annex A. When a class3 failure is observed, the size of the adhesive delamination shall be described by the ratio ( r / a ) of the radius of adhesive delamination r to
41、the radius of the indent a . For a class 3 failure, the radius of adhesive delamination is defined as the maximum radius of the delamination related to the centre of the indent, excluding any needle-like delaminations away from the indent. It is recommended that at least three measurements be made a
42、t representative locations. 7 LimitsResults shall onlybe compared when a similar substrate/coating combination and coating thickness are used.When comparing results, class designations shall be linked to the load used. Only indents made at the sameload shall be compared. 8 Test reportThe test report
43、 shall include the following information:a) the name and address of the testing establishment; b) the date of the test, a unique identification of the testreport and of each page, the name and address of the customer and the signature of the responsible individual(s);c) a reference to this Internati
44、onal Standard, i.e. ISO 26443; d) the type of test equipment used, the manufacturer and the date of the last calibration; e) a description of the test material: type of substrate, type of coating and date of receipt;f) the method of test (i.e. the load) used, and details of sampling and specimen pre
45、paration; g) the results of at least three tests for the load used, including descriptions for any class 2 and class3failures;h) any comments about the test or the test results (e.g. the observation of cohesive failure). BS EN ISO 26443:2016 ISO 26443:2008 (E)4 ISO 2008 All rights reservedAnnex A(in
46、formative) Pictorial representations and sample photographs of the classes defined in Table 1 Class 0 Class 1 BS EN ISO 26443:2016 ISO 26443:2008 (E) ISO 2008 All rights reserved 5Class 2 Class 3 BS EN ISO 26443:2016 ISO 26443:2008 (E)6 ISO 2008 All rights reservedBibliography1 ISENORM research proj
47、ect 1998-2000, supported by the DWTC (Belgium), partners VITO, WTCM, Free University of Brussels (ULB)BS EN ISO 26443:2016 ISO 26443:2008 (E)BS EN ISO 26443:2016 ISO 26443:2008 (E)ICS 81.060.30 Price based on 6 pages ISO 2008 All rights reserved BS EN ISO 26443:2016 ISO 26443:2008 (E)This page has been intentionally left blankBS EN ISO 26443:2016 ISO 26443:2008 (E)This page deliberately left blank
