ISO 8081:2021
Aerospace process — Chemical conversion coating for aluminium alloys — General purpose
This document specifies the requirements for producing and testing a general purpose chemical conversion coating on aluminium alloys.
The chemical conversion coating is used in the manufacture of aerospace products in order to improve paint adhesion and resistance to corrosion.
This process can also be used for touch-up of anodic coatings.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Classification
4.2 Material to be coated
4.3 Coating materials
4.4 Process requirements
4.5 Preparation of aluminium material to be coated
4.6 Process details
4.6.1 Water characteristics
4.6.2 Cleaning
4.6.3 Deoxidizing
4.6.4 Racking of parts
4.6.5 Coating procedures
4.6.6 Rinsing and drying
5 Quality assurance provisions
5.1 Responsibility for inspection
5.2 Lot acceptance tests
5.3 Process control tests
5.4 Process qualification tests
5.5 Solution control
5.6 Inspection and testing of coatings
5.6.1 Visual appearance
5.6.2 Coating mass per unit area
5.6.3 Corrosion resistance
5.6.4 Paint adhesion
5.7 Approval
6 Packaging and delivery
6.1 Packaging
6.2 Delivery
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements
4.1 Classification
4.2 Material to be coated
4.3 Coating materials
4.4 Process requirements
4.5 Preparation of aluminium material to be coated
4.6 Process details
4.6.1 Water characteristics
4.6.2 Cleaning
4.6.3 Deoxidizing
4.6.4 Racking of parts
4.6.5 Coating procedures
4.6.6 Rinsing and drying
5 Quality assurance provisions
5.1 Responsibility for inspection
5.2 Lot acceptance tests
5.3 Process control tests
5.4 Process qualification tests
5.5 Solution control
5.6 Inspection and testing of coatings
5.6.1 Visual appearance
5.6.2 Coating mass per unit area
5.6.3 Corrosion resistance
5.6.4 Paint adhesion
5.7 Approval
6 Packaging and delivery
6.1 Packaging
6.2 Delivery