SS-EN-ISO-14647 Metallic coatings - Determination of porosity in gold coatings on metal substrates - Nitric acid vapour test (ISO 14647:2000)

SS-EN-ISO-14647 - 2016 EDITION - CURRENT


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This International Standard specifies equipment and a method for using nitric acid vapour to determine porosity in gold coatings, particularly electrodeposits and clad metals used on electrical contacts.This method is designed to show whether the porosity level is less than or greater than some value that, by experience, is considered by the user to be acceptable for the intended application.It is suitable for inlays or claddings containing 75 % or more of gold, for electrodeposits containing 95 % or more of gold or for substrates of copper, nickel and their alloys that are commonly used in electrical contacts.The nitric acid vapour test is too severe to be used for gold coatings less than 0,6 ┬Ám thick. It is also not suitable for coatings that are less noble than gold or platinum, such as palladium and its alloys, or gold-flashed palladium and its alloys.Several other porosity testing methods are described in ISO 10308 and in the literature (see e.g. Bibliography, [1] and [2]).

To find similar documents by classification:

25.220.40 (Metallic coatings Including electrolytic depositions, cathodic coatings, autocatalytic coatings, etc.)

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Designation Name

SS-EN ISO 14647:2016

Revision Level

2016 EDITION

Status

Current

Publication Date

April 25, 2016

Language(s)

English

Page Count

24

International Equivalent

EN ISO 14647:2016(IDT); ISO 14647:2000(IDT)