DIN EN ISO 2143:2018-09
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 2143:2017); German version EN ISO 2143:2017
| Fecha edición: |
2018-09-01
En Vigor
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| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | 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 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; for example, oiling, waxing or lacquering; d) are coloured in deep shades; e) are less that 3 µm thick. The method is less appropriate where nickel or cobalt salts, or organic additives, have been added to the sealing bath. |
| Keywords: | Absorption|Acids|Aluminium|Aluminium alloys|Anodic coating|Anodic oxidation|Chemical analysis and testing|Chemical indicators|Coatings|Compressing|Dye affinity|Dye strain tests|Electrical admittance|Impedance measurement|Inorganic|Inspection|Light metals|Materials testing|Measurement|Measuring techniques|Non-destructive testing|Non-ferrous metals|Non-metallic coatings|Oxide coatings|Resistance|Sealing|Testing |
| ICS: | 25.220.20 - Tratamiento de superficies |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 2143:2017 Idéntica ISO 2143:2017 |
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Reemplazo Normas |
Reemplaza a DIN EN ISO 2143:2018-03 |
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