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1、BS EN ISO 27874:2008 ICS 25.220.40, NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Metallic and other inorganic coatings Electrodeposited gold and gold alloy coatings for electrical, electronic and engineering purposes Specification and test methods (ISO 2787
2、4:2008) Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2008 BSI 2008 ISBN 978 0 580 59218 8 Amendments/corrigenda is
3、sued since publication DateComments BS EN ISO 27874:2008 National foreword This British Standard is the UK implementation of EN ISO 27874:2008. It supersedes BS4292-1:1989 and BS6670-1:1986 and BS6670-4:1986 and BS6670-5:1986 which are withdrawn. The UK participation in its preparation was entrusted
4、 to Technical Committee STI/33, Electrodeposited and related coatings. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct app
5、lication. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 27874 September 2008 ICS 25.220.40 Eng
6、lish Version Metallic and other inorganic coatings - Electrodeposited gold and gold alloy coatings for electrical, electronic and engineering purposes - Specification and test methods (ISO 27874:2008) Revtements mtalliques et autres revtements inorganiques - Dpts lectrolytiques dor et dalliages dor
7、pour usages lectrique, lectronique et industriels - Spcification et mthodes dessai (ISO 27874:2008) Metallische berzge - Galvanische Gold- und Goldlegierungsberzge fr elektrische, elektronische und technische Zwecke - Anforderungen und Prfverfahren (ISO 27874:2008) This European Standard was approve
8、d by CEN on 13 September 2008. CEN members 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
9、 standards may be obtained on application to the CEN 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 noti
10、fied to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Ma
11、lta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of ex
12、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 27874:2008: E Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 EN ISO 27874:2008 (E) 3 Foreword This document (EN
13、ISO 27874:2008) has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings“ 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 nati
14、onal standard, either by publication of an identical text or by endorsement, at the latest by March 2009, and conflicting national standards shall be withdrawn at the latest by March 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent r
15、ights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. 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, Cyprus,
16、 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, Switzerland and the United Kingdom. Endorsement notice The text of ISO 27874
17、:2008 has been approved by CEN as a EN ISO 27874:2008 without any modification. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 ISO 27874:2008(E) ISO 2008 All rights reserved iii Contents Page Foreword iv Introduct
18、ion v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 2 4 Information to be supplied to the electroplater. 3 5 Designation . 4 6 Requirements and test methods. 6 7 Sampling 9 Annex A (normative) Requirements for undercoats. 10 Annex B (normative) Methods of measuring the thickness of
19、gold and gold alloy coatings 12 Annex C (normative) Adhesion tests . 20 Annex D (normative) Determination of gold content 22 Bibliography. 24 Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 ISO 27874:2008(E) iv ISO
20、 2008 All rights reserved Foreword 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
21、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 Electrotechnical Commi
22、ssion (IEC) on 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 technica
23、l committees 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 shal
24、l not be held responsible for identifying any or all such patent rights. ISO 27874 was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings, Subcommittee SC 3, Electrodeposited coatings and related finishes. This first edition of ISO 27874 cancels and replaces ISO 4523:1
25、985, ISO 4524-1:1985, ISO 4524-4:1985 and ISO 4524-5:1985, of which it constitutes a technical revision. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 ISO 27874:2008(E) ISO 2008 All rights reserved v Introduction
26、 The engineering uses of electrodeposited gold and gold alloy coatings have expanded with the growth of the electrical and electronic industries. Low voltages and currents, dry circuits and microwave frequencies require low-resistance interconnection systems, connectors and waveguides. Non-tarnishin
27、g, low-resistance gold coatings were the logical choice for connectors where the stability of contact surfaces was critical. The need to improve the wear resistance of gold coatings led to the development of new electroplating solutions containing controlled amounts of metallic and non-metallic addi
28、tives that either changed the composition or altered the crystal structure of the coating. The special needs of the printed-circuit industry led to the development of acid gold electroplating solutions that contained no free cyanide, yielding coatings that are hard, bright and solderable. Formulatio
29、ns for high-speed electroplating up to current densities of 200 A/dm2 were introduced for continuous strip, stripe or spot gold and gold alloy coatings. The high cost of gold metal has led to the development of selective and thickness profile plating techniques to limit the use of the metal to the a
30、ctive areas only of the components, where the gold is required. Designers will therefore often specify the area requiring gold electroplating as well as the thickness profile, if required, by reference to suitably marked drawings. With the introduction of many new gold electroplating formulations an
31、d the proliferation of engineering applications, the need for technical standards that specify the requirements of electrodeposited gold and gold alloy coatings, as well as the test methods to ensure that the specified requirements are met, is critical. Composition, appearance, hardness, thickness,
32、purity, porosity, wear resistance, solderability, electrical contact resistance, infrared reflectivity and other properties must be controlled to produce high-quality gold and gold alloy coatings for engineering purposes. Licensed Copy: London South Bank University, South Bank University, 31/01/2009
33、 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 INTERNATIONAL STANDARD ISO 27874:2008(E) ISO 2008 All rights reserved 1 Metallic and other inorganic coatings
34、Electrodeposited gold and gold alloy coatings for electrical, electronic and engineering purposes Specification and test methods WARNING This International Standard may not be compliant with some countries health, safety and environmental legislations. It calls for the use of substances and/or proce
35、dures that may be injurious to health if adequate safety measures are not taken. This International Standard does not address any health hazards, safety or environmental matters, or legislation associated with its use. It is the responsibility of the user of this International Standard to establish
36、appropriate health, safety and environmentally acceptable practices and take appropriate action to comply with any national, regional and/or international regulations. Compliance with this International Standard does not, of itself, confer immunity from legal obligations. 1 Scope This International
37、Standard specifies the requirements for electrodeposited gold and gold alloy coatings for electrical, electronic and other engineering applications on metallic and non-metallic substrates. It also specifies test methods for measuring the properties of the coatings. Although this International Standa
38、rd does not specify the condition, finish or surface roughness of the basis material prior to electroplating, the appearance and serviceability of electroplated gold or gold alloy coatings depends on the condition of the basis material. It is essential that the purchaser specify the surface finish a
39、nd roughness of the basis material in order to conform to the product requirements. This International Standard does not apply to coatings on threaded articles or to coatings on sheet or strip in non-fabricated form. 2 Normative references The following referenced documents are indispensable for the
40、 application 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. ISO 1463, Metallic and oxide coatings Measurement of coating thickness Microscopical method ISO 2064, Metalli
41、c and other inorganic coatings Definitions and conventions concerning the measurement of thickness ISO 2080, Metallic and other inorganic coatings Surface treatment, metallic and other inorganic coatings Vocabulary ISO 2177, Metallic coatings Measurement of coating thickness Coulometric method by an
42、odic dissolution ISO 2819, Metallic coatings on metallic substrates Electrodeposited and chemically deposited coatings Review of methods available for testing adhesion ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods Licensed Copy: London South Bank University
43、, South Bank University, 31/01/2009 03:31, Uncontrolled Copy, (c) BSI BS EN ISO 27874:2008 ISO 27874:2008(E) 2 ISO 2008 All rights reserved ISO 3543, Metallic and non-metallic coatings Measurement of thickness Beta backscatter method ISO 3868, Metallic and other non-organic coatings Measurement of c
44、oating thicknesses Fizeau multiple- beam interferometry method ISO 3882, Metallic and other inorganic coatings Review of methods of measurement of thickness ISO 4516, Metallic and other inorganic coatings Vickers and Knoop microhardness tests ISO 4518, Metallic coatings Measurement of coating thickn
45、ess Profilometric method ISO 4519, Electrodeposited metallic coatings and related finishes Sampling procedures for inspection by attributes ISO 4524-2, Metallic coatings Test methods for electrodeposited gold and gold alloy coatings Part 2: Mixed flowing gas (MFG) environmental tests ISO 4524-3:1985
46、, Metallic coatings Test methods for electrodeposited gold and gold alloy coatings Part 3: Electrographic tests for porosity ISO 4524-6, Metallic coatings Test methods for electrodeposited gold and gold alloy coatings Part 6: Determination of the presence of residual salts ISO 9587, Metallic and oth
47、er inorganic coatings Pretreatment of iron or steel to reduce the risk of hydrogen embrittlement ISO 9588, Metallic and other inorganic coatings Post-coating treatments of iron or steel to reduce the risk of hydrogen embrittlement ISO 10289, Methods for corrosion testing of metallic and other inorga
48、nic coatings on metallic substrates Rating of test specimens and manufactured articles subjected to corrosion tests ISO 10308, Metallic coatings Review of porosity tests ISO 12687, Metallic coatings Porosity tests Humid sulfur (flowers of sulfur) test ISO 14647, Metallic coatings Determination of po
49、rosity in gold coatings on metal substrates Nitric acid vapour test IEC 60068-2-20, Environmental testing Part 2-20: Tests Test T: Test methods for solderability and resistance to soldering heat of devices with leads 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2064 and ISO 2080 and the following apply. 3.1 gold or gold alloy coating electrodeposited gold or gold alloy having intentional alloying elements in