1、BRITISH STANDARD BS EN ISO 4527:2003 Metallic coatings Autocatalytic (electroless) nickel-phosphorus alloy coatings Specification and test methods The European Standard EN ISO 4527:2003 has the status of a British Standard ICS 25.220.40 BS EN ISO 4527:2003 This British Standard was published under t
2、he authority of the Standards Policy and Strategy Committee on 23 July 2003 BSI 23 July 2003 ISBN 0 580 42295 X National foreword This British Standard is the official English language version of EN ISO 4527:2003. It is identical with ISO 4527:2003. The UK participation in its preparation was entrus
3、ted to Technical Committee STI/33, Electrodeposited and related coating, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications r
4、eferred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary pr
5、ovisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretati
6、on, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page,
7、pages ii to v, a blank page, pages 1 to 22, the annex ZA page and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO4527 May2003 IC
8、S25.220.40 Englishversion MetalliccoatingsAutocatalytic(electroless)nickelphosphorus alloycoatingsSpecificationandtestmethods(ISO4527:2003) RevtementsmtalliquesDptsautocatalytiques(sans courant)dalliagesdenickelphosphoreSpcificationset mthodesdessai(ISO4527:2003) MetallischeberzgeAutokatalytisch(aue
9、nstromlos) abgeschiedeneNickelPhosphorLegierungsberzge SpezifikationenundPrfverfahren(ISO4527:2003) ThisEuropeanStandardwasapprovedbyCENon25April2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandard
10、withoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibility
11、ofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spa
12、in,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO4527:2003EINES
13、O54:7202(30E) 2 Foreword Thisdocument(ENISO4527:2003)hasbeenpreparedbyTechnicalCommitteeISO/TC107 “Metallicandotherinorganiccoatings“incollaborationwithTechnicalCommitteeCEN/TC262 “Metallicandotherinorganiccoatings“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanation
14、alstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyNovember2003,andconflictingnational standardsshallbewithdrawnatthelatestbyNovember2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanSt
15、andard:Austria,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,Switzerlandand theUnitedKingdom. Endorsementnotice ThetextofISO4527:2003hasbeenapprovedbyCENasENISO4527:2003withoutany modific
16、ations. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). ENISO4527:2003 Reference number ISO 4527:2003(E)NINRETOITALAN ADNATSDR ISO 4725 noceSde doitin 0-300251-5 Metallic coatings Autocatalytic (electroless) nickel-phosphorus alloy coatings Specification and test method
17、s Revtements mtalliques Dpts autocatalytiques (sans courant) dalliages de nickel-phosphore Spcifications et mthodes dessai Referecne unmebr OSI :7254)E(3002INTERNATIONAL STANDARD ISO 4527 Second edition 2003-05-15 c cillateMoitang s Aucotlataytci rtcele(osselcin )p-leksohhpsuro ollay itaoc sgn epSci
18、tacifiet dna nots temdohs veRmetstne atmllqiseu pDst uacotataylitseuq (ssna cruo)tna ladilsega dn eick-lehpsohpro e cpScifitaoisn te tmsedoh sedsia ENISO4527:2003IS:7254 O3002(E) ii ENISO4527:2003IS:7254 O3002(E) iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references. 1 3 Terms
19、 and definitions. 2 4 Information to be supplied to the producer of the coating. 3 4.1 Essential information 3 4.2 Additional information 3 5 Designation of basis metal, metal layers and heat treatment requirements 4 5.1 General. 4 5.2 Designating the basis metal. 4 5.3 Designation of heat treatment
20、 requirements . 4 5.4 Designating the type and thickness of metal layers . 5 5.5 Examples of designations 5 6 Requirements 5 6.1 Special test specimens. 5 6.2 Appearance 5 6.3 Surface finish 6 6.4 Thickness. 6 6.5 Hardness 6 6.6 Adhesion 6 6.7 Porosity 6 6.8 Corrosion resistance 6 6.9 Stress relief
21、heat treatment prior to coating 7 6.10 Hydrogen embrittlement relief heat treatment after coating 7 6.11 Heat treatment to harden the coating . 7 6.12 Heat treatment to improve adhesion. 7 6.13 Wear resistance. 7 6.14 Solderability. 8 6.15 Chemical composition 8 6.16 Peening of metal parts 8 6.17 Un
22、dercoats and overcoats. 8 7 Sampling 8 Annex A (normative) Heat treatment to improve adhesion and increase hardness . 9 Annex B (informative) Thickness test methods 12 Annex C (informative) Guidance on thickness, composition and use of autocatalytic nickel-phosphorus coatings 15 Annex D (normative)
23、Methods for chemical analysis of autocatalytic nickel coatings for phosphorus content . 18 Bibliography . 22 ENISO4527:2003IS:7254 O3002(E) iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of pre
24、paring 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 has the right to be represented on that committee. International organizations, governmental and non-governmental, in
25、 liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (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
26、 of technical committees is to prepare International Standards. 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 bodies casting a vote. Attention
27、 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. ISO 4527 was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings, Subcommittee S
28、C 3, Electrodeposited coatings and related finishes. This second edition cancels and replaces the first edition (ISO 4527:1987), which has been technically revised. ENISO4527:2003IS:7254 O3002(E) vIntroduction Autocatalytic nickel-phosphorus alloy coatings are produced by the catalytic reduction of
29、nickel ions in hot, usually mildly acidic solutions at atmospheric pressure using hypophosphite ion as the reducing agent. Because the deposited nickel alloy is a catalyst for the reaction, the process is self-sustaining. The coatings produced are uniform in thickness on irregularly shaped parts if
30、the processing solution circulates freely over their surfaces. The as-deposited coating is a thermodynamically metastable, supersaturated solid solution of phosphorus in nickel containing up to 14 % mass fraction phosphorus. The physical and chemical properties and the structure of autocatalytic nic
31、kel-phosphorus coatings are dependent on the composition of the coating, the chemical make-up of the plating solution, the pre-treatment and quality of the substrate, and heat treatment after deposition. Autocatalytic nickel-phosphorus coatings are applied in order to improve corrosion protection an
32、d to provide wear resistance. In general, corrosion performance is significantly improved as the phosphorus content of the deposit is increased to 8 % mass fraction or higher, whereas wear resistance is improved as the phosphorus content of the coating is decreased below that level. With suitable he
33、at treatment however, coatings with high phosphorus contents display greatly improved microhardness and hence, wear resistance. ENISO4527:2003blankINTENRATIONAL TSANDADR IS:7254 O3002(E)1Metallic coatings Autocatalytic (electroless) nickel- phosphorus alloy coatings Specification and test methods 1
34、Scope This International Standard specifies the requirements and test methods for autocatalytic nickel-phosphorus alloy coatings applied from aqueous solutions on to metallic substrates. This International Standard does not apply to autocatalytic nickel-boron alloy coatings, nickel-phosphorus compos
35、ites and ternary alloys. WARNING The use of this International Standard may involve hazardous materials, operation and equipment. This International Standard does not purport to address all the safety problems associated with its use. It is the responsibility of the user of this International Standa
36、rd to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For
37、 undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1463, Metal and oxide coatings Measurement of coating thickness Microscopical method ISO 2064, Metallic and other inorganic coatings Definitions and conventions concerning the measurement of th
38、ickness ISO 2079, Surface treatment and metallic coatings General classification of terms ISO 2080 1) , Surface treatment, metallic and other inorganic coatings Vocabulary ISO 2177, Metallic coatings Measurement of coating thickness Coulometric measurement by anodic dissolution ISO 2178, Non-magneti
39、c coatings on magnetic substrates Measurement of coating thickness Magnetic method ISO 2819, Metallic coatings on metallic substrates Electrodeposited and chemically deposited coatings Review of methods available for testing adhesion ISO 2859-1, Sampling procedures for inspection by attributes Part
40、1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection ISO 2859-2, Sampling procedures for inspection by attributes Part 2: Sampling plans indexed by limiting quality (LQ) for isolated lot inspection ISO 2859-3, Sampling procedures for inspection by attributes Part 3
41、: Skip-lot sampling procedures 1) To be published. (Revision of ISO 2080:1981) ENISO4527:2003IS:7254 O3002(E) 2 ISO 2859-4, Sampling procedures for inspection by attributes Part 4: Procedures for assessment of declared quality levels ISO 3497, Metallic coatings Measurement of coating thickness X-ray
42、 spectrometric methods ISO 3543, Metallic and non-metallic coatings Measurement of coating thickness Beta-backscatter method ISO 3882, Metallic and other inorganic coatings Review of methods of measurement of thickness ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile metho
43、d Rules and procedures for the assessment of surface texture ISO 4516, Metallic and other inorganic coatings Vickers and Knoop microhardness tests ISO 4519, Electrodeposited metallic coatings and related finishes Sampling procedures for inspection by attributes ISO 4526 2) , Metallic coatings Electr
44、oplated coatings of nickel and nickel alloys for engineering purposes ISO 6158, Metallic coatings Electrodeposited coatings of chromium for engineering purposes ISO 9220, Metallic Coatings Measurement of coating thickness Scanning electron microscope method ISO 9227, Corrosion tests in artificial at
45、mospheres Salt spray tests ISO 9587, Metallic and other inorganic coatings Pretreatments 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, Meth
46、ods for corrosion testing of metallic and other inorganic coatings on metallic substrates Rating of test specimens and manufactured articles subjected to corrosion tests ISO 10587, Metallic and other inorganic coatings Test for residual embrittlement in both metallic-coated and uncoated externally-t
47、hreaded articles and rods Inclined wedge method ISO 12686, Metallic and other inorganic coatings Automated controlled shot-peening of articles prior to nickel, autocatalytic nickel or chromium plating, or as a final finish ISO 15724, Metallic and other inorganic coatings Electrochemical measurement of diffusible hydrogen in steels Barnacle electrode method 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 2064, ISO 2079, ISO 2080, ISO 9587 and ISO 9588 apply. See 1 for European terminology. 2) To be published. (Revision of ISO 4526:1984) EN
