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EN ISO 2177:2004

Current

Current

The latest, up-to-date edition.

Metallic coatings - Measurement of coating thickness - Coulometric method by anodic dissolution (ISO 2177:2003)

Published date

26-05-2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Instrumentation
6 Electrolyte
7 Factors affecting the measuring accuracy
   7.1 Coating thickness
   7.2 Current variation
   7.3 Area variation
   7.4 Agitation (if required)
   7.5 Alloy layer between coating and substrate
   7.6 Purity of coatings
   7.7 Condition of test surface
   7.8 Density of coating material
   7.9 Cleanliness of the cell
   7.10 Cleanliness of electrical connections
   7.11 Calibration standards (if used)
   7.12 Non-uniform dissolution
8 Procedure
   8.1 General
   8.2 Preparation of test surface
   8.3 Cell application
   8.4 Electrolysis
   8.5 Undercoats
   8.6 Examination after test
   8.7 Coatings on cylindrical specimens
9 Expression of results
10 Measurement uncertainty
11 Test report
Annex A (informative) Typical electrolytes
Annex B (informative) Types of instrument
Annex ZA (normative) Normative references to international
                     publications with their relevant
                     European publications

ISO 2177:2002 describes a coulometric method by anodic dissolution for measuring the thickness of metallic coatings. It is only applicable to conductive coatings.Typical combinations of coatings and substrates that can be tested by this method are given. Other combinations may be tested with electrolytes in current use, or new electrolytes may be developed for them but, in both cases, it is necessary to verify the suitability of the complete system.ISO 2177:2002 is also applicable to multi-layer systems, e.g Cu-Ni-Cr. It may be used to measure the thickness of coatings applied by various means, if due account is taken of special features such as the presence of an alloy layer. In some cases, the presence and thickness of diffusion layers can also be measured. It can also be used to measure the thickness of coatings on cylindrical specimens and wires.

Committee
CEN/TC 262
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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