DIN EN ISO 16773-3-2016 Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens - Part 3 Processing and analysis of data from dummy cells (ISO 16773-.pdf

1、December 2016 English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 87.040!%V,“2595109www.din.deDIN

2、 EN ISO 16773-3Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens Part 3: Processing and analysis of data from dummy cells (ISO 167733:2016);English version EN ISO 167733:2016,English translation of DIN EN ISO 16773-3:2016-12Elektrochemische Impedanzspektroskopie

3、(EIS) an beschichteten und unbeschichteten metallischen Proben Teil 3: Verarbeitung und Analyse von Daten von Testschaltkreisen (ISO 167733:2016);Englische Fassung EN ISO 167733:2016,Englische bersetzung von DIN EN ISO 16773-3:2016-12Spectroscopie dimpdance lectrochimique (SIE) sur des prouvettes mt

4、alliques revtues etnon revtues Partie 3: Traitement et analyse des donnes obtenues partir de cellules test (ISO 167733:2016);Version anglaise EN ISO 167733:2016,Traduction anglaise de DIN EN ISO 16773-3:2016-12SupersedesDIN EN ISO 167733:200909www.beuth.deDocument comprises 19 pagesDTranslation by D

5、IN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.16 DIN EN ISO 16773-3:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 16773-3:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”

6、, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Beschichtung

7、sstoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen, Working Group NA 002-00-07-17 AK Elektrochemische Methoden. DIN EN ISO 16773 consists of the following parts, unde

8、r the general title Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens: Part 1: Terms and definitions Part 2: Collection of data Part 3: Processing and analysis of data from dummy cells Part 4: Examples of spectra of polymer-coated and uncoated specimens The DIN S

9、tandard corresponding to the International Standard referred to in this document is as follows: ISO 16773-2 DIN EN ISO 16773-2 Amendments This standard differs from DIN EN ISO 16773-3:2009-09 as follows: a) the introductory element of the title, Paints and varnishes, has been deleted, since the scop

10、e has been extended to include metals and metal alloys, and the main element of the title has been changed to Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens; b) a reference to ISO/TR 16208 has been added for dummy cells with low impedance values (10 to 1 000 )

11、; c) a reference to ASTM G106 has been added for the precision data of low impedance measurements; d) a test report has been added. Previous editions DIN EN ISO 16773-3: 2009-09 DIN EN ISO 16773-3:2016-12 3 National Annex NA (informative) Bibliography DIN EN ISO 16773-2, Electrochemical impedance sp

12、ectroscopy (EIS) on coated and uncoated metallic specimens Part 2: Collection of data DIN EN ISO 16773-3:2016-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 16773-3 April 2016 ICS 87.040 Supersedes EN ISO 16773-3:2009English Version Electrochemical imp

13、edance spectroscopy (EIS) on coated and uncoated metallic specimens - Part 3: Processing and analysis of data from dummy cells (ISO 16773-3:2016) Spectroscopie dimpdance lectrochimique (SIE) sur des prouvettes mtalliques revtues et non revtues -Partie 3: Traitement et analyse des donnes obtenues par

14、tir de cellules test (ISO 16773-3:2016) Elektrochemische Impedanzspektroskopie (EIS) an beschichteten und unbeschichteten metallischen Proben - Teil 3: Verarbeitung und Analyse von Daten von Testschaltkreisen (ISO 16773-3:2016) This European Standard was approved by CEN on 11 March 2016. CEN members

15、 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 concerning such national standards may be obtained on application

16、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 its own language and notified to the CEN-CENELEC Management

17、 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit

18、huania, 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 NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B

19、-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 16773-3:2016 EForeword .41 Scope . 52 Description of the dummy cells 52.1 General . 52.2 Components of the dummy cells . 52.3 Accuracy requirements for the com

20、ponents . 62.4 Circuit description . 63 Procedure. 74 Data analysis . 75 Presentation of the results . 76 Acceptance criteria for the measurement system . 97 Test report . 98 Repeatability and reproducibility .10Bibliography .15Contents PageEuropean foreword . 3EN ISO 16773-3:2016 (E) DIN EN ISO 167

21、73-3:2016-12 2 European foreword This document (EN ISO 16773-3:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard shall be given th

22、e status of a national standard, 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 t

23、he 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 ISO 16773-3:2009. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to i

24、mplement this European Standard: 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, Roma

25、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 16773-3:2016 has been approved by CEN as EN ISO 16773-3:2016 without any modification. EN ISO 16773-3:2016 (E) DIN EN ISO 16773-3:2016-12 3 ForewordISO (the International Organizati

26、on 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 for which a technical committee has been established ha

27、s 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) on all matters of electrotechnical standardization.The p

28、rocedures 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 documents should be noted. This document was drafted in accordance with the edit

29、orial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).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 any or all such patent rights. Details of any patent righ

30、ts identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an expla

31、nation 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: Foreword - Supplementary informationThe committee responsible for this docum

32、ent is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and replaces the first edition (ISO 16773-3:2009), which has been technically revised. The main changes are the following:a) the introductory element of the title, Pai

33、nts and varnishes, has been omitted, because the scope is broadened to include metals and alloys and the main element of the title has been changed to: Electrochemical impedance spectroscopy (EIS) on coated and uncoated metallic specimens;b) a reference to ISO/TR 16208 for dummy cells with low imped

34、ance values (10 to 1 000 ) has been added;c) a reference to ASTM G106 for the precision data of low impedance measurements has been added;d) a test report has been added.ISO 16773 consists of the following parts, under the general title Electrochemical impedance spectroscopy (EIS) on coated and unco

35、ated metallic specimens: Part 1: Terms and definitions Part 2: Collection of data Part 3: Processing and analysis of data from dummy cells Part 4: Examples of spectra of polymer-coated and uncoated specimensEN ISO 16773-3:2016 (E) DIN EN ISO 16773-3:2016-12 4 1 ScopeThis part of ISO 16773 specifies

36、a procedure for the evaluation of the experimental set-up used for carrying out EIS on high-impedance coated samples. For this purpose, dummy cells are used to simulate high-impedance coated samples. On the basis of the equivalent circuits described, this part of ISO 16773 gives guidelines for the u

37、se of dummy cells to increase confidence in the test protocol, including making measurements, curve fitting and data presentation.NOTE Due to the nature of the measurements, investigations of high-impedance coated samples are more susceptible to artefacts coming from electromagnetic interferences. T

38、herefore, this part of ISO 16773 considers the aspects for measuring high-impedance samples by using appropriate dummy cells in a Faraday cage. However, most manufacturers offer complementary dummy cells in the low and medium impedance range. This allows checking the setup in the respective low impe

39、dance range.2 Description of the dummy cells2.1 GeneralA set of four equivalent circuits (dummy cells) is used to check the overall experimental arrangement. The dummy cells are mounted separately. Two types of equivalent circuit, A and B, are used, as shown in Figure 1. The specific electrical comp

40、onents of these four cells are given in Table 1. Dummy cells with low impedance values (10 to 1 000 ) are described in ISO/TR 16208.NOTE In Clause 8, the results of an interlaboratory test are used to evaluate the precision of this method. During the interlaboratory test, the participating laborator

41、ies also measured a fifth dummy cell consisting of an equivalent circuit of type B with unknown component values.2.2 Components of the dummy cellsEach dummy cell consists of a combination of resistors and capacitors which are soldered directly onto a printed-circuit board (see Figures 1 and 2). Such

42、 networks of resistors and capacitors (equivalent circuits) are often used in work on high-impedance coated specimens.NOTE Because of the very high overall resistance of circuits A and B, the resistor simulating the electrolyte can be neglected. Typically, the values of resistances R1and R2are above

43、 100 M whereas the electrolyte resistance is around 100 to 500 . As a consequence, the electrolyte resistance is not significant in this kind of EIS application.The values of the components of the four dummy cells are chosen in accordance with the following considerations. Dummy cell 1 should check

44、the input resistance as well as the input capacitance of the measurement equipment. Dummy cells 2 to 4 should check the capability of the evaluation software and the impedance measurement equipment to distinguish between only slightly different resistor/capacitor combinations.EN ISO 16773-3:2016 (E)

45、 DIN EN ISO 16773-3:2016-12 5 Figure 1 Equivalent circuits of the dummy cellsTable 1 Values of the components of the dummy cellsDummy cell CircuitR1GR2GC1nFC2nF1 A 50 0,15 2 B 1 10 0,15 0,473 B 1 0,2 0,1 204 B 0,1 0,1 10 102.3 Accuracy requirements for the componentsThe accuracy required for resisto

46、rs below 109 is 2 % and for resistors above 109 it is 5 %. The accuracy required for the capacitors is 5 %. Such resistors and capacitors are available commercially.2.4 Circuit descriptionUsually, the measurement of high-impedance coatings requires only a two-electrode set-up, but electrochemical wo

47、rkstations offer the possibility of connecting up three or four electrodes. To simplify the connection of the dummy cells to electrochemical workstations, each cell should have four connectors (as indicated in Figure 2), the connectors being connected internally in pairs. To avoid contamination (e.g

48、. by fingerprints) of the printed-circuit board, each dummy cell is protected by acrylic plates mounted on top of and underneath the cell.Key1, 2 connector pairsFigure 2 Photograph of a dummy cell used in the interlaboratory testEN ISO 16773-3:2016 (E) DIN EN ISO 16773-3:2016-12 6 3 ProcedurePerform all measurements in a Farad