EN ISO 6509-1-2014 en Corrosion of metals and alloys - Determination of dezincification resistance of copper alloys with zinc - Part 1 Test method《金属与合金的腐蚀 含锌铜合金耐脱锌性能的测定 第1部分 试验方法(.pdf

1、BSI Standards PublicationBS EN ISO 6509-1:2014Corrosion of metals andalloys Determination ofdezincification resistance ofcopper alloys with zincPart 1: Test methodBS EN ISO 6509-1:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO6509-1:2014. Together with

2、 BS EN ISO 6509-2 it supersedes BS EN ISO6509:1995 which will be withdrawn on the publication of BS EN ISO6509-2.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/NFE/8, Corrosion of metals and alloys.A list of organizations represented on this committee can beobtained

3、on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 76010 5ICS 77.060Compliance with a Britis

4、h Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedStandards Policy and Strategy Committee on 30 June 2014.Amendments/corri

5、genda issued since publicationDate Text affectedThis British Standard is the UK implementation of EN ISO 6509-1:2014. Together with BS EN ISO 6509-2 it supersedes BS EN ISO 6509:1995 which will be withdrawn on the publication of BS EN ISO 6509-2.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN I

6、SO 6509-1 June 2014 ICS 77.060 Supersedes EN ISO 6509:1995English Version Corrosion of metals and alloys - Determination of dezincification resistance of copper alloys with zinc - Part 1: Test method (ISO 6509-1:2014) Corrosion des mtaux et alliages - Dtermination de la rsistance la dzincification d

7、es alliages de cuivre avec le zinc - Partie 1: Mthode dessai (ISO 6509-1:2014) Korrosion von Metallen und Legierungen - Bestimmung der Entzinkungsbestndigkeit von Kupfer-Zink-Legierungen - Teil 1: Prfverfahren (ISO 6509-1:2014) This European Standard was approved by CEN on 7 May 2014. CEN members ar

8、e 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

9、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 Ce

10、ntre 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, Lithua

11、nia, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1

12、000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6509-1:2014 EBS EN ISO 6509-1:2014EN ISO 6509-1:2014 (E) 3 Foreword This document (EN ISO 6509-1:2014) has been prepared by Technical Committee ISO/TC 156 “Corro

13、sion of metals and alloys” in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings” 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 t

14、he latest by December 2014, and conflicting national standards shall be withdrawn at the latest by December 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any

15、 or all such patent rights. This document supersedes EN ISO 6509:1995. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmar

16、k, 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, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement noti

17、ce The text of ISO 6509-1:2014 has been approved by CEN as EN ISO 6509-1:2014 without any modification. BS EN ISO 6509-1:2014ISO 6509-1:2014(E) ISO 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Reagents and materials

18、. 16 Apparatus . 27 Test specimens 28 Preparation of test specimens 39 Procedure. 49.1 Positioning of test specimens for test . 49.2 Operating conditions . 49.3 Duration of test . 49.4 Preparation of sections for microscopic examination 49.5 Microscopic examination . 410 Test report . 6Bibliography

19、7BS EN ISO 6509-1:2014ISO 6509-1:2014(E)ForewordISO (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 bod

20、y 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 Electrote

21、chnical 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

22、 documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttention 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 responsibl

23、e 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. www.iso.org/patentsAny trade name used in this document is information given for the con

24、venience 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 ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Forewo

25、rd - Supplementary informationThe committee responsible for this document is ISO/TC 156, Corrosion of metals and alloys.This first edition of ISO 6509-1, together with ISO 6509-2, cancels and replaces ISO 6509:1981, which has been technically revised. The clause formerly concerning acceptance limits

26、 has been removed since it has been taken up in the new Part 2.ISO 6509 consists of the following parts, under the general title Corrosion of metals and alloys Determination of dezincification resistance of copper alloys with zinc: Part 2: Acceptance criteria1)1) In preparation.iv ISO 2014 All right

27、s reservedBS EN ISO 6509-1:2014INTERNATIONAL STANDARD ISO 6509-1:2014(E)Corrosion of metals and alloys Determination of dezincification resistance of copper alloys with zinc Part 1: Test method1 ScopeThis part of ISO 6509 specifies a method for the determination of dezincification depth of copper al

28、loys with zinc exposed to fresh, saline waters or drinking water. The method is intended for copper alloys with a mass fraction of zinc more than 15 %.This part of ISO 6509 describes only the test methodology and does not set out criteria for acceptability of materials for a specific application. Ac

29、ceptance criteria are described in ISO 6509-2.NOTE The method may be used outside its scope for control or research purposes.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references

30、, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 8044, Corrosion of metals and alloys Basic terms and definitions3 Terms and definitionsFor the purposes of this document the terms and definitions given in I

31、SO 8044 apply.4 PrincipleExposure of test specimens to copper (ll) chloride solution followed by microscopic examination.5 Reagents and materials5.1 Copper (ll) chloride, mass fraction 1 % solution, freshly prepared.Dissolve 12,7 g of copper(II) chloride dihydrate (CuCl22H20) in deionized water (5.2

32、) and make up the volume to 1 000 ml.5.2 Water, deionized with a conductivity not higher than 20 S/cm at 25 C 2 C.5.3 Non-conducting mounting material, such as phenolic resin for embedding the test specimens.5.4 Appropriate solvent, for cleaning the test specimens. ISO 2014 All rights reserved 1BS E

33、N ISO 6509-1:2014ISO 6509-1:2014(E)6 Apparatus6.1 Beaker of glass, covered with suitable plastic foil, for example polyethylene, secured with elastic thread or another method of sealing using non-metallic material.6.2 Thermostatically controlled method, capable of maintaining the test temperature at

34、 75 C 5 C. Figure 1 provides an example of a method of heating the test solution.6.3 Optical microscope, provided with a scale for measurement.Key1 heating device2 water or oil bath3 plastic foil secured with elastic thread4 beaker containing the copper (II) chloride solution5 embedded test specimen

35、Figure 1 Example of test apparatus7 Test specimens7.1 Unless specified in other product standards, the following method for specimen preparation shall be adopted.7.2 The test specimens shall be taken, for example by sawing with light pressure, in such a way that the properties of the materials are u

36、naffected.7.3 For forgings and castings, at least one test specimen shall be taken from the region with the thinnest section and at least one from the region with the thickest section.7.4 In the case of materials with a specific extrusion or rolling direction, for example plates or bars, two specime

37、ns shall be taken. One of the specimens shall be taken from the end and the other specimen from 2 ISO 2014 All rights reservedBS EN ISO 6509-1:2014ISO 6509-1:2014(E)another section of the extruded product. In each specimen surfaces both parallel and perpendicular to the extrusion or rolling directio

38、n shall be tested. In addition, in the case of rods, all test specimens, transverse or longitudinal, shall be cut in such a way as to include points midway between the axis and the periphery.7.5 The area of each test specimen to be exposed shall be approximately 100 mm2. If the size of the component

39、 or the cross-section of the rod to be tested is too small to provide test areas of this size, the largest possible test area shall be taken.See Figure 2.Dimensions in millimetresKey1 phenolic resin or equivalent material2 ground test surface3 test specimenFigure 2 Embedded test specimen with one te

40、st surface8 Preparation of test specimens8.1 The test specimens shall be embedded in the phenolic resin or equivalent material (5.3). The test surfaces to be exposed shall be ground using wet abrasive paper, finishing with 500 grade or finer, see Figure 2.8.2 Prior to testing, the test specimens sha

41、ll be cleaned to remove any surface contamination. The efficacy of the solvent chosen shall be demonstrated, for example according to ASTM F2165(2007). ISO 2014 All rights reserved 3BS EN ISO 6509-1:2014ISO 6509-1:2014(E)9 Procedure9.1 Positioning of test specimens for testThe test specimens shall b

42、e placed in the beaker (6.1) containing the copper (II) chloride solution (5.1) so that the test surfaces are vertical and at least 15 mm above the bottom of the beaker. The plastic foil shall then be placed over the beaker and secured (see Figure 1).NOTE 250 ml+1050ml of the copper (II) chloride so

43、lution are required per 100 mm2of exposed surface of the test pieces.9.2 Operating conditions9.2.1 The beaker containing the test specimens shall be placed in the thermostatically controlled environment (6.2), the temperature of which shall be maintained at 75 C 5 C during the entire exposure period

44、.9.2.2 Different alloys shall not be tested simultaneously in the same beaker.9.3 Duration of testThe test specimens shall be exposed continuously for 24 h 30 min. At the end of this period, they shall be removed from the beaker, washed in water (5.2), rinsed in an appropriate solvent (5.4) and allo

45、wed to dry.9.4 Preparation of sections for microscopic examinationMicroscopic examination of the test specimens shall be carried out as soon as possible after exposure. If the test specimens are stored before microscopic examination, they shall be kept in a desiccator. Each test specimen shall be se

46、ctioned at right angles to the exposed test surface. The section shall be ground and polished for microscope examination. The total length of the section through the exposed surface shall be not less than 5 mm. If the dimensions of the test specimen make this impossible, the section shall be taken t

47、o provide the maximum possible total length.9.5 Microscopic examination9.5.1 The micro-section prepared from each test area shall be examined using an optical microscope provided with a scale for measurement of the dezincification depth (6.3) and the maximum as well as the average depth of dezincifi

48、cation with respect to the final, corroded, surface shall be recorded. The appropriate magnification shall be used to provide the greatest accuracy of measurement.9.5.2 For some purposes, assessment of the characteristics of dezincification distribution, for example whether the depth of the dezincif

49、ied zone varies greatly (localized dezincification) or is an extended area (layer dezincification) and whether the attack is limited to a single phase in the alloy, measurements of both the average and the maximum depth of dezincification shall be executed. In the case of a few localized dezincification attacks, only the measurement of the maximum depth of attack is required. The importance of measurement of both maximum and average dezincification depth is demonstrated in Figure 3.4 ISO 2014 All rights reservedBS EN IS