ISO 2143:2017 PDF

Scope: This document 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, c) have been given supplementary processing, e.g. oiling, waxing or lacquering, e) are less than 3 μm thickness. b) are sealed by the dichromate process, d) are coloured in deep shades, and The method is less appropriate where nickel or cobalt salts, or organic additives, have been added to baths used for hydrothermal sealing.

ISO 2143:2017 Referenced Document

ISO 2931:2010 Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of admittance
ISO 3210:2010 Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution
ISO 7583:2013 Anodizing of aluminium and its alloys.Terms and definitions

2017 ISO 2143:2017 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
2010 ISO 2143:2010 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
1981 ISO 2143:1981 Anodizing of aluminium and its alloys; Estimation of loss of absorptive power of anodic oxide coatings after sealing; Dye spot test with prior acid treatment