1、BRITISH STANDARD Metallic and other inorganic coatings - Definitions and conventions concerning the measurement of thickness The European Standard EN IS0 2064:2000 has the status of a British Standard ICs 01.040.17; 17.040.20; 25.220.40; 25.220.99 BS EN IS0 z064:2000 NO COPYING WITEIOUT BSI PERMISSI
2、ON EXCEPT AS PERMIlTED BY COPYRIGIIT LAW BS EN IS0 2064:2000 been prepared under the direction of the Sector Committee for Materiais and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 July 2000 Amd. No. O BSI 07-2000 ISBN O 580 34331 6 National fo
3、reword Date Comments This British Standard is the officiai English language version of EN IS0 2064:2000. It is identical with IS0 2064: 1996. It supersedes BS EN IS0 2064: 1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee STI/37, Methods of test fo
4、r metallic and related coatings, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationaVEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and
5、 European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretaxy. Cross-references Attention is dram to the fact that CEN and CENELEC Standards nody include an annex which lists normative references to internation
6、al publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Stanbds Correspondence Index”, or by using the “Find” facility of t
7、he BSI Standards Electronic Catalogue. A British Standard does not purport to include ali the necessary provisions of a conimct. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Sum
8、mary of pages This document comprises a front cover, an inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, pages ii and iii, a blank page, pages 1 and 2, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the d
9、ocument was last issued. STDOBSI BS EN IS0 20b4-ENGL 2000 W 1624669 0853333 035 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 2064 March 2000 ICs 25.220.30, 25.220.40 Supersedes EN IS0 2064:1994 English version Metallic and other inorganic coatings - Definitions and conventions concerning
10、 the measurement of thickness (IS0 2064: 1 996) Revtements mtalliques et autres revtements inorganiques - Dfinitions et principes concernant le mesurage de lpaisseur (IS0 2064:1996) Metallische und andere anorganische Schichten - Definitionen und Festiegungen, die die Messung der Schichtdicke betref
11、fen (IS0 2064:1996) This European Standard was approved by CEN on 24 January 2000. CEN members are bound to comply with the CENKENELEC 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
12、bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any GEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibili
13、ty of a GEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherland
14、s, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserve
15、d worldwide for CEN national Members. Ref. No. EN IS0 2064:2000 E STD.BS1 BS EN IS0 20b4-ENGL 2000 = Lb24bb 0653114 T71 EN IS0 2064:2000 Foreword The text of the International Standard from Technical Committee ISOTTC 107 “Metallic and other inorganic coatings“ of the International Organization for S
16、tandardization (EO) has been taken over as an European Standard by Technical Committee CENTTC 262 “Metallic and other inorganic coatings“, the secretariat of which is held by BSI. This European Standard replaces EN IS0 2064:1994. This European Standard shall be given the status of a national standar
17、d, either by publication of an identical text or by endorsement, at the latest by September 2000, and conflicting national standards shall be withdrawn at the latest by September 2000. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries a
18、re bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard
19、IS0 2064:1996 has been approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). STDmBSI BS EN IS0 2064-ENGL 2000 W 3b24bb9 0853315 908 EN IS0 2064:2000 I NT E R NAT IO N AL STANDARD IS0 2064 Third editi
20、on 1996-10-01 Metallic and other inorganic coatings - Definitions and conventions concerning the measurement of thickness Revtements mtalliques et autres revtements inorganiques - Dfinitions et principes concemant le mesurage de lpaisseur Reference number IS0 2064:1996(E) STD.BSI BS EN IS0 20b4-ENGL
21、 2000 W Lb24bb OB53LLb 044 EN IS0 2064:2000 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each membe
22、r 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 EO, also take part in the work. IS0 collab- orates closely with the International El
23、ectrotechnical Commission (IEC) on all matters of electro tec h n ical standard i zat ion. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodie
24、s casting a vote. International Standard IS0 2064 was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings, Subcommittee SC 2, Methods of inspection and coordination of test methods. This third edition cancels and replaces the second edition (IS0 2064:1980), of which it
25、constitutes a technical revision, STD.BSI BS EN IS0 20b4-ENGL 2000 W 1624669 0853117 780 m EN IS0 2064:2000 Introduction An important requirement of most coating specifications is that the coating have a thickness not less than a given value (and in a few cases not greater than a given value). The m
26、ethod to be used for measuring the thickness of a particular coating is laid down in the coating specification. The main purpose of this International Standard is to define exactly what is meant by the term “minimum thickness” when used in specifications for metallic and related coatings. In this co
27、ntext, the minimum thickness is de- fined as a local thickness over a small area. With some methods, for example the microscopical method, IS0 1463, it is possible to detect appreciable variations in thickness across extremely small areas (for example pits or cracks) which might be considered as pla
28、ces where the specified minimum thickness has not been achieved. However, with other test methods (for example the coulometric method, IS0 2177:1985, Metallic coatings - Measurement of coating thickness - Codornethc method by anodic dissolution, or various non-destructive methods), such minute local
29、 variations in thickness cannot be detected. Therefore, the only practicable definition of minimum thickness is one that allows comparable results to be obtained by any of the approved test methods. Hence the minimum thickness should be a local thickness over an area that is as small as practicable,
30、 but not too small to accommodate any of the specified test methods. These areas are termed “reference areas” and are often large enough to accommodate a number of separate measurements by the chosen method. In order to obtain consistent results, especially with non-destructive tests, the mean of th
31、e measurements of such tests on the reference area should be taken as the local thickness. In practice, it is usually permissible to test the coating at any place on the significant surface in order to find the minimum thickness on an article. Articles are usually tested at areas where the coating m
32、ay be expected to be thinnest and so the definition of minimum thickness is the lowest value of local thickness (as defined in clause 3) found by the chosen method. In the case of some coatings, such as hot-dipped and sprayed metal coat- ings, the coating specifications may call for compliance with
33、a minimum lo- cal or an average thickness, or both. These may differ from the parameters defined in this International Standard and the relevant product specifi- cations should be consulted. iii STD.BS1 BS EN IS0 20bLI-ENGL 2000 Lb24bh9 0853LL8 bL7 EN IS0 2064:2000 Metallic and other inorganic coati
34、ngs - Definitions and conventions concerning the measurement of thickness 1 Scope This International Standard defines terms Concerning the meaSUrement Of the thickness Of metallic and other inorganic coatings on any substrate. In addition, it specifies some general rules to be followed in the measur
35、ement of minimum thicknesses of coatings. a) for analytical methods, the area over which the coating is removed; b) for the anodic dissolution method, the area en- closed by the sealing ring of the cell; c) for the microscopical method, the field of view at a specified magnification (see IS0 1463);
36、2 Normative references The following standard contains provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this
37、 International Standard are encouraged to in- vestigate the possibility of applying the most recent editions of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid Inter- national Standards. d) for non-destructive methods, the probe area or the area influencing
38、 the reading (see also the Introduc- tion). 3.3 reference area: The area within which a speci- fied number of single measurements is required to be made. 3.4 local thickness: The mean of the thickness measurements, of which a specified number is made within a reference area (see also the Introductio
39、n). IS0 1463:1982, Metallic and oxide coating - Meas- urement of coating thickness - Mjcroscopica/ method. 3.5 minimum local thickness: The lowest Value Of the local thicknesses found on the significant surface of a single article (see also the Introdction). 3.6 maximum local thickness: The highest
40、value of of a single article. 3 Definitions lowing definitions apply. For the purposes of this International Standard, the fol- the local thicknesses found on the significant surface 3.1 significant surface: The part of the article cov- ered or to be covered by the coating and for which the coating
41、is essential for serviceability and/or appear- ance and where the coating must meet all of the speci- fied requirements. 3.7 average thickness: Either the value obtained by analytical methods (see 5.1) or the mean of a specified number of local thickness measurements that are evenly distributed over
42、 the significant surface (see 5.2 and also the Introduction). 3.2 measuring area: The area of the significant sur- face over which a single measurement is made. “Measuring area” for the following methods is defined as NOTE- In the case of components coated in bulk, the product specification may requ
43、ire determination of the value of the average thickness of a bath. In such cases the stan- dard deviation must be known to be able to estimate the pro- portion of the batch that is below the thickness in question. 1 EN IS0 2064:2000 4 Determination of local thickness Average thickness measurements a
44、re usually made on small articles of limited total surface area. 4.1 Articles with significant surfaces less than 1 cm2 The normal reference area to be used for determining the local thickness shall be the whole of the significant surface of the article. The number of single meas- urements to be mad
45、e within this reference area shall be agreed between the parties concerned. In special cases, however, smaller reference areas may be taken, but their sizes, number and location shall be agreed between the parties concerned. 4.2 Articles with significant surfaces greater than 1 cm2 The local thickne
46、ss shall be determined within a ref- erence area of approximately 1 cm2 (where possible, a square of 1 cm side). Up to five distributed measure- ments may be made within this reference area (depen- dent upon the measuring method used) and the number to be made shall be agreed between the par- ties c
47、oncerned. 4.3 Microscopical method When using the microscopical method specified in IS0 1463, at least five distributed measurements shall be made along a length) of a specified microsection. 5 Determination of average thickness 5.1 Analytical methods When using mass-loss methods for determining av-
48、 erage thickness, the selected measuring area shall be large enough to provide a mass loss that can be deter- mined with sufficient accuracy by the weighing method used. If the area of the significant surface of the coated article is less than the required minimum measuring area, a number of individ
49、ual articles shall be selected to provide the measuring area required for a single de- termination and the result shall be regarded as the average thickness. If the area of the significant surface of the coated article does not greatly exceed the required minimum measuring area, a single determination on that article shall be regarded as the average thickness for the article. At least two articles shall be measured in order to verify the accuracy of the measurement. If the area of the significant surface of the coated articles markedly exceeds the required mi
