1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSIDRAFT FOR DEVELOPMENT DD CEN/TS 1071-8:2004 Advanced technical ceramics Methods of test for ceramic coatings Part 8: Rockwell indentation test for evaluation of adhesion ICS 81.060.30 Li
2、censed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSIDD CEN/TS 1071-8:2004 This Draft for Development was published under the authority of the Standards Policy and Strategy Committee on 8 April 2005 BSI 8 April 2005 ISBN 0 580 45693 5 Nation
3、al foreword This Draft for Development is the official English language version of CEN/TS 1071-8:2004. This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development Series of publications and is of a provisional nature because it is considered that fur
4、ther experience is required in its application before it is converted to a European and hence British Standard. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development
5、 are requested so that UK experience can be reported to the European organization responsible for its conversion to a European standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end
6、of its 3-year life. Notification of the start of the review period will be made in an announcement in the appropriate issue of Update Standards. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a Europ
7、ean standard, to extend the life of the Technical Specification or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee RPI/13, Advanced technical ceramics, at 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposi
8、ng, where possible, an appropriate revision of the text. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue
9、 under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. Summary of pages This document comprises a front cover, an inside front cover, the CEN/TS title page, pages 2 to 9 and a back
10、cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSITECHNICALSPECIFICATION
11、SPCIFICATIONTECHNIQUE TECHNISCHESPEZIFIKATION CEN/TS10718 September2004 ICS81.060.30 Englishversion AdvancedtechnicalceramicsMethodsoftestforceramic coatingsPart8:Rockwellindentationtestforevaluationof adhesion CramiquestechniquesavancesMthodesdessaipour revtementscramiquesPartie8:Evaluationde ladhr
12、encepartestdepntrationRockwell HochleistungskeramikVerfahrenzurPrfungkeramischer SchichtenTeil8:RockwellEindringprfungzurBewertung derHaftung ThisTechnicalSpecification(CEN/TS)wasapprovedbyCENon6June2004forprovisionalapplication. TheperiodofvalidityofthisCEN/TSislimitedinitiallytothreeyears.Aftertwo
13、yearsthemembersofCENwillberequested tosubmittheir comments,particularlyonthequestionwhethertheCEN/TScanbeconvertedintoaEuropeanStandard. CENmembersarerequiredtoannouncetheexistenceofthisCEN/TSinthesamewayasforanENandtomaketheCEN/TSavailable promptlyatnationallevelinanappropriateform.Itispermissiblet
14、okeepconflictingnationalstandardsinforce(inparall eltotheCEN/TS) untilthefinaldecisionaboutthepossibleconversionoftheCEN/TSintoanENisreached. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Lat
15、via,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationin
16、anyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.CEN/TS10718:2004:E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Principle4 4
17、Apparatus .4 5 Sampling and preparation of test specimens.4 6 Method of test 5 7 Limits 6 8 Test report 6 Annex A (informative) Indentation and classification7 Bibliography 9 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071
18、-8:2004 (E) 3 Foreword This document (CEN/TS 1071-8:2004) has been prepared by Technical Committee CEN/TC 184 “Advanced technical ceramics”, the secretariat of which is held by BSI. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
19、 bound to announce this Technical Specification: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
20、and the United Kingdom. EN 1071 Advanced technical ceramics Methods of test for ceramic coatings consists of eleven parts: Part 1: Determination of coating thickness by contact probe profilometer Part 2: Determination of coating thickness by the crater grinding method Part 3: Determination of adhesi
21、ve and other mechanical failure modes by a scratch test Part 4: Determination of chemical composition by electron probe microanalysis (EPMA) Part 5: Determination of porosity Part 6: Determination of the abrasion resistance of coatings by a micro-abrasion wear test Part 7: Determination of hardness
22、and modulus by depth sensing indentation Part 8: Rockwell indentation test for evaluation of adhesion Part 9: Determination of fracture strain Part 10: Determination of coating thickness by cross sectioning Part 11: Measurement of internal stress with the Stoney formula. Licensed Copy: Wang Bin, ISO
23、/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 4 1 Scope This document specifies a method for the evaluation of the adhesion of ceramic coatings by indentation with a Rockwell diamond indenter. The formation of cracks after indentation ma
24、y also reveal cohesive failure. The indentations are made with a Rockwell hardness test instrument. The method described in this document may also be suitable for evaluating the adhesion of metallic coatings. 2 Normative references The following referenced documents are indispensable for the applica
25、tion 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. EN ISO 6508-1 Metallic materials - Rockwell hardness test - Part 1: Test method (scales A, B, C, D, E, F, G, H, K, N,
26、 T) (ISO 6508-1:1999) EN ISO 6508-2 Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines (scales A, B, C, D, E, F, G, H, K, N, T) (ISO 6508-2:1999) 3 Principle An indentation is made into the coated surface of the specimen to be tested whereby the co
27、ating near the indent 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 according to EN ISO 6508-1 following the procedure for a Rockwell hardness indentation. The Rockwell har
28、dness testing machine shall conform with the requirements of EN ISO 6508-2. The contour of the diamond indenter shall be checked regularly by optical means (magnifying glass, optical microscope, stereomicroscope or projection screen). This check shall be made for at least four different axial sectio
29、ns. The indenter shall be replaced if this examination reveals any damage of the indenter (e.g. chipping). A magnification of at least 200:1 is recommended to detect ring cracks or microwear. NOTE Although a research project to evaluate the effect of indentation parameters showed no major influence
30、of load rate or holding time on the results (see 1) they should be kept constant for reasons of repeatability. To conform with EN ISO 6508-1 requires that the loading time be between 1 s and 8 s and the hold time at 4 s 2 s. Neither loading time nor holding time need to be recorded. 5 Sampling and p
31、reparation of test specimens Select a representative test specimen from the coating to be tested. Clean the specimen so that it is free from dust and other particles, and also from oil or other surface films. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Unc
32、ontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 5 6 Method of test Indentation shall be made in a direction perpendicular to the specimen surface. Therefore specimens shall be prepared plane parallel and/or levelled before indentation. Depending on the coating/substrate combination a suitable load ran
33、ge shall be selected. The following rules shall apply: for metallic substrates harder than 54 HRC a load of 150 kgf (1471,5N) shall be used (Rockwell C scale); for metallic substrates softer than 54 HRC and for medium case-hardened steel substrates a load of 100 kgf (981N) shall be used (Rockwell D
34、scale); for all other substrates, e.g. shallow case-hardened steel, thin substrates, cemented carbides, solid ceramics and cermets, a load of 60 kgf (588,6N) shall be used (Rockwell A scale). Using an optical microscope, at a magnification of 100, relate the indentation with the classification given
35、 in table 1. A pictorial representation and sample photographs of these classes can be found in Annex A. Table 1 Classes and observation Class Observation Class 0 no cracks nor adhesive delamination Class 1 cracking without adhesive delamination of the coating Class 2 partial adhesive delamination w
36、ith or without cracking Class 3 complete adhesive delamination NOTE 1 Class 0 does not necessarily indicate good adhesion. The absence of any visual failure can be due to the test not being suitable for the substrate/coating system under investigation (e.g. thin elastic coatings on hard substrates).
37、 NOTE 2 The test may also reveal cohesive failure of the coating, e.g. cracking. The observation of cracks can be facilitated by using optical contrasting techniques, e.g. Nomarski. NOTE 3 Delamination can be due to adhesive as well as cohesive failure of the coating. Adhesive delamination is define
38、d 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 an underlying sublayer can be clearly distinguished. Cohesive delamination is defined as a partial removal of the coating whereby
39、 the underlying substrate stays covered by the coating, or a removal of one or more sublayers in a multilayer coating whereby the substrate and none of the underlying sublayers can be clearly distinguished. NOTE 4 Complete delamination is defined as an uninterrupted removal of the coating along the
40、circumference of the indent. When a Class 2 failure is observed an estimate of the percentage of delamination in relation to the surface area of the indent shall be given. When a Class 3 failure is observed the size of the adhesive delamination shall be described by the ratio of the radius of adhesi
41、ve delamination (r) to the radius of the indent (a). NOTE 5 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. Licensed Copy: Wang Bin, ISO/Ex
42、change China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 6 NOTE 6 It is recommended that at least 3 measurements be made on representative locations. 7 Limits Results shall only be compared when a similar substrate/coating combination and coating thic
43、kness are used. When comparing results, class designations shall be linked to the load used. Only indents made at the same load shall be compared. 8 Test report The test report shall include the following information: a) name and address of testing establishment; b) date of the test, unique identifi
44、cation of the report and of each page, customer name and address, signature of responsible individual(s); c) reference to this standard, i.e. determined in accordance with CEN/TS 1071-8; d) manufacturer and type of test equipment, date of last calibration; e) description of the test material: type o
45、f substrate, type of coating, date of receipt; f) method of test (load used), specimen sampling and preparation; g) results of at least three tests for the load used, including descriptions for Class 2 or Class 3 failures; h) comments about the test or the test results, e.g. the observation of cohes
46、ive failure. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 7 Annex A (informative) Indentation and classification Figures A.1 to A.4 illustrate the classification of coating damage given in Table 1. Figure A.1
47、 Class 0 Figure A.2 Class 1 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSICEN/TS 1071-8:2004 (E) 8 Figure A.3 Class 2 Figure A.4 Class 3 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontr
48、olled Copy, (c) BSICEN/TS 1071-8:2004 (E) 9 Bibliography 1 ISENORM research project 1998-2000, supported by the DWTC (Belgium), partners VITO, WTCM, Free University of Brussels (ULB). Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 21 June 2005, Uncontrolled Copy, (c) BSIDD CEN/TS 1071-8:2004 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe
