NF EN ISO 2177

NF EN ISO 2177

November 2004
Standard Current

Metallic coatings - Measurement of coating thickness - Coulometric method by anodic dissolution

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.

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Main informations

Collections

National standards and national normative documents

Publication date

November 2004

Number of pages

23 p.

Reference

NF EN ISO 2177

ICS Codes

25.220.40   Metallic coatings

Classification index

A91-111

Print number

1 - 25/10/2004

International kinship

ISO 2177:2003

European kinship

EN ISO 2177:2004
Sumary
Metallic coatings - Measurement of coating thickness - Coulometric method by anodic dissolution

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.

Replaced standards (1)
NF EN ISO 2177
April 1995
Standard Cancelled
Metallic coatings. Measurement of coating thickness. Coulometric method by anodic dissolution.

Table of contents
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  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    2
  • 5 Appareillage
    2
  • 6 Électrolyte
    3
  • 7 Facteurs influant sur la précision du mesurage
    3
  • 7.1 Épaisseur de revêtement
    3
  • 7.2 Variation du courant
    3
  • 7.3 Variation de la superficie
    3
  • 7.4 Agitation (le cas échéant)
    4
  • 7.5 Couche d'alliage entre le revêtement et le métal de base
    4
  • 7.6 Pureté du revêtement
    4
  • 7.7 État de la surface d'essai
    4
  • 7.8 Masse volumique du matériau de revêtement
    4
  • 7.9 Propreté de la cellule
    4
  • 7.10 Propreté des raccordements électriques
    4
  • 7.11 Étalons (le cas échéant)
    4
  • 7.12 Dissolution non uniforme
    5
  • 8 Mode opératoire
    5
  • 8.1 Généralités
    5
  • 8.2 Préparation de la surface d'essai
    5
  • 8.3 Pose de la cellule
    5
  • 8.4 Électrolyse
    5
  • 8.5 Sous-couches
    5
  • 8.6 Examen après essai
    6
  • 8.7 Revêtements d'échantillons cylindriques
    6
  • 9 Expression des résultats
    6
  • 10 Incertitude de mesure
    7
  • 11 Rapport d'essai
    7
  • Annexe A (informative) Électrolytes types
    8
  • Annexe B (informative) Types d'appareils
    14
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