NF EN ISO 2143

NF EN ISO 2143

November 2010
Standard Cancelled

Anodizing of aluminium and its alloys - Estimation of loss of absorptive power of anodic oxidation coatings after sealing - Dye spot test with prior acid treatment

ISO 2143:2010 specifies a method of estimating the loss of absorptive power of anodic oxidation coatings that have undergone a sealing treatment, by dye absorption after acid pretreatment.The method is suitable for use as a production control method and is applicable to anodic oxidation coatings which may be subjected to weathering or aggressive environments, or where resistance to staining is important.The method is not applicable to those coatings that: a) are formed on alloys containing more than 2 % copper or 4 % silicon; b) are sealed by the dichromate process; c) have been given supplementary processing, e.g. oiling, waxing or lacquering; d) are coloured in deep shades; e) are less than 3 μm thick.The method is less appropriate where nickel or cobalt salts, or organic additives, have been added to the sealing bath.

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Main informations

Collections

National standards and national normative documents

Publication date

November 2010

Number of pages

13 p.

Reference

NF EN ISO 2143

ICS Codes

25.220.20   Surface treatment
77.120.10   Aluminium and aluminium alloys

Classification index

A91-482

Print number

1 - 29/10/2010

International kinship

ISO 2143:2010

European kinship

EN ISO 2143:2010
Sumary
Anodizing of aluminium and its alloys - Estimation of loss of absorptive power of anodic oxidation coatings after sealing - Dye spot test with prior acid treatment

ISO 2143:2010 specifies a method of estimating the loss of absorptive power of anodic oxidation coatings that have undergone a sealing treatment, by dye absorption after acid pretreatment.

The method is suitable for use as a production control method and is applicable to anodic oxidation coatings which may be subjected to weathering or aggressive environments, or where resistance to staining is important.

The method is not applicable to those coatings that: a) are formed on alloys containing more than 2 % copper or 4 % silicon; b) are sealed by the dichromate process; c) have been given supplementary processing, e.g. oiling, waxing or lacquering; d) are coloured in deep shades; e) are less than 3 μm thick.

The method is less appropriate where nickel or cobalt salts, or organic additives, have been added to the sealing bath.

Replaced standards (1)
NF EN 12373-4
January 1999
Standard Cancelled
Aluminium and aluminium alloys. Anodizing. Part 4 : estimation of loss of absorptive power of anodic oxidation coatings after sealing by dye spot test with prior acid treatment.

Le présent document prescrit une méthode permettant d'apprécier la perte du pouvoir absorbant des couches anodiques ayant subi un traitement de colmatage par un essai de coloration après traitement acide préalable.

Standard replaced by (1)
NF EN ISO 2143
November 2017
Standard Current
Anodizing of aluminium and its alloys - Estimation of loss of absorptive power of anodic oxidation coatings after sealing - Dye-spot test with prior acid treatment

ISO 2143 specifies a method of estimating the loss of absorptive power of anodic oxidation coatings that have undergone a sealing treatment, by dye absorption after acid pretreatment. The method is suitable for use as a production control method and can be applicable to anodic oxidation coatings which may be subjected to weathering or aggressive environments, or where resistance to staining is important. The method is not applicable to those coatings that a) are formed on alloys containing more than 2 % copper or 4 % silicon, b) are sealed by the dichromate process, c) have been given supplementary processing, e.g. oiling, waxing or lacquering, d) are coloured in deep shades, and e) are less than 3 μm thickness. The method is less appropriate where nickel or cobalt salts, or organic additives, have been added to baths used for hydrothermal sealing.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Principe
    1
  • 3 Réactifs
    1
  • 4 Éprouvettes
    2
  • 5 Mode opératoire
    2
  • 6 Expression des résultats
    3
  • 7 Rapport d'essai
    3
  • Annexe A (normative) Interprétation des résultats de l'essai à la goutte de colorant
    4
  • Bibliographie
    5
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