EN ISO 3210-2010 en Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphor.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 3210:2010Anodizing of aluminium and itsalloys Assessment of qualityof sealed anodic oxidationcoatings by measurementof the loss of mass afterimmersion in phosphoric aci

2、d/chromic acid solution (ISO3210:2010)BS EN ISO 3210:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3210:2010.It supersedes BS EN 12373-6:1999 and BS EN 12373-7:2002, which are withdrawn.The UK participation in its preparation was entrusted to Technica

3、lCommittee STI/32, Anodic oxidation coatings on aluminium. A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 20

4、10 ISBN 978 0 580 66003 0 ICS 25.220.20 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2010 Amendments issued since publicationDate T e x t a f f e c t e

5、d EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3210 July 2010 ICS 25.220.20 Supersedes EN 12373-6:1998, EN 12373-7:2002English Version Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in p

6、hosphoric acid/chromic acid solution (ISO 3210:2010) Anodisation de laluminium et de ses alliages - valuation de la qualit des couches anodiques colmates par mesurage de la perte de masse aprs immersion en solution phosphochromique (ISO 3210:2010) Anodisieren von Aluminium und Aluminiumlegierungen -

7、 Prfung der Qualitt von verdichteten, anodisch erzeugten Oxidschichten durch Bestimmung des Masseverlustes nach Eintauchen in Chromphosphorsure-Lsung (ISO 3210:2010) This European Standard was approved by CEN on 30 June 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations

8、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 the CEN Management Centre or to any CEN member. This Europea

9、n 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 Management Centre has the same status as the official versions. CEN members are the natio

10、nal standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl

11、and and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN

12、ISO 3210:2010: EBS EN ISO 3210:2010EN ISO 3210:2010 (E) 3 Foreword This document (EN ISO 3210:2010) has been prepared by Technical Committee ISO/TC 79 “Light metals and their alloys“ in collaboration with Technical Committee CEN/TC 132 “Aluminium and aluminium alloys” the secretariat of which is hel

13、d by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2011, and conflicting national standards shall be withdrawn at the latest by January 2011. Attention is drawn to the possibility

14、 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 or all such patent rights. This document supersedes EN 12373-6:1998, EN 12373-7:2002. According to the CEN/CENELEC Internal Regulations, the national

15、standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norw

16、ay, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 3210:2010 has been approved by CEN as a EN ISO 3210:2010 without any modification. BS EN ISO 3210:2010ISO 3210:2010(E) ISO 2010 All rights reserved iiiContents Pag

17、e Foreword iv 1 Scope1 2 Principle1 3 Reagents.1 4 Apparatus.2 5 Preparation of test piece.2 6 Procedure.2 6.1 Method 1.2 6.2 Method 2.3 7 Expression of results4 8 Test report4 Annex A (normative) Method for the drying of samples.5 Bibliography6 BS EN ISO 3210:2010ISO 3210:2010(E) iv ISO 2010 All ri

18、ghts reservedForeword ISO (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 body interested in a subject

19、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 Electrotechnical Commission (IEC) o

20、n all matters of electrotechnical standardization. International 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 Standards adopted by the technical committees

21、are circulated to the member bodies for voting. Publication as 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

22、 responsible for identifying any or all such patent rights. ISO 3210 was prepared by Technical Committee ISO/TC 79, Light metals and their alloys, Subcommittee SC 2, Organic and anodic oxidation coatings on aluminium. This third edition cancels and replaces the second edition (ISO 3210:1983), which

23、has been technically revised. BS EN ISO 3210:2010INTERNATIONAL STANDARD ISO 3210:2010(E) ISO 2010 All rights reserved 1Anodizing of aluminium and its alloys Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid so

24、lution 1 Scope This International Standard specifies methods of assessing the quality of sealed anodic oxidation coatings on aluminium and its alloys by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution. This International Standard consists of the following two

25、 methods. Method 1: assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution, without prior acid treatment. Method 2: assessment of quality of sealed anodic oxidation coatings by measurement of the loss of m

26、ass after immersion in phosphoric acid/chromic acid solution with prior acid treatment. Method 1 is applicable to anodic oxidation coatings intended for decorative or protective purposes or where resistance to staining is important. Method 2 is applicable to anodic oxidation coatings intended for ar

27、chitectural purposes. For less severe applications, Method 1 may be more suitable. The methods are not applicable to the following: hard-type anodic oxidation coatings which normally are not sealed; anodic oxidation coatings that have been sealed only in dichromate solutions; anodic oxidation coatin

28、gs produced in chromic acid solutions; anodic oxidation coatings that have undergone a treatment to render them hydrophobic. NOTE The methods are destructive and can serve as reference methods in case of doubt or dispute regarding the results of the test for loss of absorptive power (see ISO 21431),

29、 or the measurement of admittance (ISO 29312). 2 Principle An unsealed anodic oxidation coating on aluminium is dissolved rapidly by acid media, whereas a well-sealed coating will withstand long immersion without appreciable attack. 3 Reagents Use only reagents of recognized analytical grade and dis

30、tilled water or deionized water. BS EN ISO 3210:2010ISO 3210:2010(E) 2 ISO 2010 All rights reserved3.1 Predip solution, used only for Method 2. Aqueous solution containing (470 15) g/l nitric acid. NOTE This solution can be obtained, for example, by diluting a 65 % nitric acid solution (20= 1,40 g/m

31、l) with an equal volume of water. 3.2 Test solution. Aqueous solution containing per litre, 35 ml of phosphoric acid (20= 1,7 g/ml) and 20 g of chromium(VI) oxide. WARNING Chromium(VI) is toxic and shall be handled properly. Chromium(VI) solutions are hazardous to the environment and severely hazard

32、ous to waters. 4 Apparatus Usual laboratory apparatus and glassware, together with the following. 4.1 Laboratory balance, capable of weighing to an accuracy of 0,1 mg. 5 Preparation of test piece Cut a piece from the material to be tested, avoiding contact areas, such that there is an area of approx

33、imately 1 dm2, but not less than 0,5 dm2, of significant surface area. Normally, the mass of the test piece should not exceed 200 g. For hollow extrusions, take the test piece from the end of the sections where the total surface area has an anodic oxidation coating (due to the throwing power of the

34、anodizing electrolyte). In special cases, such as certain types of jigging, small hollow sections, etc., it is necessary to remove the anodic oxidation coating from the inside surface and to carry out the test on the coating on the outer surface of the extrusion. 6 Procedure 6.1 Method 1 6.1.1 Measu

35、re the total coated area of the test piece (excluding cut edges and other uncoated surfaces). NOTE The test solution does not attack bare metal and it is not necessary to take uncoated surfaces into account. Remove any surface bloom from the test piece by rubbing with a dry cloth. 6.1.2 Degrease the

36、 test piece in an organic solvent, e.g. acetone or ethanol (96 %), at room temperature according to the method specified in A.1. 6.1.3 Dry the test piece thoroughly in accordance with A.1 and A.2 and weigh immediately to the nearest 0,1 mg (mass m1). 6.1.4 Immerse the test piece completely, standing

37、 upright, in the test solution (see 3.2) and leave it for exactly 15 min at a constant temperature of 38 C 1 C. Uniformity of temperature within the test solution is very important; this can be achieved by using a water-bath and stirring continuously. BS EN ISO 3210:2010ISO 3210:2010(E) ISO 2010 All

38、 rights reserved 3Do not use the test solution after more than 4,5 g of anodic oxidation coating have been dissolved per litre of solution. Do not use the test solution which has been in contact with materials other than anodized aluminium or its alloys. 6.1.5 Take the test piece from the test solut

39、ion and rinse thoroughly, first under running water and then in distilled water or deionized water. Dry the test piece as specified in Annex A and weigh immediately to the nearest 0,1 mg (mass m2). 6.1.6 During the operations described in 6.1.2 to 6.1.5, avoid touching the test piece with bare hands

40、. Take extreme care that the two drying operations required in 6.1.3 and 6.1.5 are carried out in the same reproducible way and avoid heating to temperatures above 60 C. 6.2 Method 2 6.2.1 Measure the total coated area of the test piece (excluding cut edges and other uncoated surfaces). NOTE The pre

41、dip and test solution do not attack bare metal and it is not necessary to take uncoated surfaces into account. 6.2.2 Degrease the test piece in an organic solvent, e.g. acetone or ethanol (96 %), at room temperature according to the method specified in A.1. 6.2.3 Dry the test piece thoroughly in acc

42、ordance with A.1 and A.2, and weigh it immediately to the nearest 0,1 mg (mass m1). 6.2.4 Immerse the test piece completely, standing upright, in the predip solution (see 3.1) and leave for 10 min at a temperature of 19 C 1 C. 6.2.5 Take the test piece from the predip and rinse it thoroughly, first

43、under running water and then in distilled water or deionized water. 6.2.6 Immerse the test piece completely, standing it upright, in the test solution (see 3.2) and leave for exactly 15 min at a constant temperature of 38 C 1 C. NOTE Uniformity of temperature within the test solution is very importa

44、nt; this can be achieved by using a water-bath and stirring continuously. Do not use the test solution after more than 4,5 g of anodic oxidation coating have been dissolved per litre of solution. Do not use the test solution which has been in contact with materials other than anodized aluminium or i

45、ts alloys. 6.2.7 Take the test piece from the test solution and rinse it thoroughly, first under running water and then in distilled water or deionized water. Dry the test piece as specified in Annex A and weigh immediately to the nearest 0,1 mg (mass m2). 6.2.8 During the operations described in 6.

46、2.2 to 6.2.7, avoid touching the test piece with bare hands. Take extreme care that the two drying operations required in 6.2.3 and 6.2.7 are carried out in the same reproducible way and avoid heating to temperatures above 60 C. BS EN ISO 3210:2010ISO 3210:2010(E) 4 ISO 2010 All rights reserved7 Exp

47、ression of results Calculate the loss in mass of surface A, in milligrams per square decimetre, using Equation (1): 12AmmA=(1) where m1is the mass, in milligrams, of the test piece before immersion in the (predip and) test solution; m2is the mass, in milligrams, of the test piece after immersion in

48、the (predip and) test solution; A is the coated surface area of the test piece, in square decimetres, in contact with the (predip and) test solution. 8 Test report The test report shall include at least the following information: a) a reference to this International Standard; b) the type and identif

49、ication of the product tested; c) whether Method 1 or Method 2 was used; d) how the significant surface area has been determined; e) whether the test solution has been stirred; f) the result of the test (see Clause 7); NOTE Acceptance levels will normally be specified in the relevant product specification. g) any deviation, by agreement or otherwise, from the procedure specified; h) the date of the test. BS EN ISO 3210:2010ISO 3210:2010(E) ISO 2010 All rights reserved 5Annex A (normative) Meth