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BS EN 4881:2023

$142.49

Aerospace series. Micro-arc oxidation of aluminium and aluminium alloys

Published By Publication Date Number of Pages
BSI 2023 28
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This document defines the requirements for micro-arc oxidation of aluminium and aluminium alloys for corrosion protection, wear, erosion, dielectric and thermal properties. The purpose of this document is to give design, quality and manufacturing requirements. It does not give complete in-house process instructions; these are given in the processors detailed process instructions. This document relates only to micro-arc oxidation. It does not relate to finishing techniques, such as mechanical post treatment.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
3.1 General terms
8 3.2 Technical terms
9 4 General principles of the process
4.1 Purpose of the process
4.2 Applicability
4.2.1 Type A: As processed
4.2.2 Type B: After blasting operation
10 4.2.3 Type C: After machining operation
4.3 Limitations
4.4 Classifications
4.4.1 System Types
4.4.2 Layer thicknesses
11 5 Process requirements
5.1 Information for the processor
5.2 Process schedule (information)
12 5.3 Process conditions
5.3.1 Tooling
5.3.2 Masking
5.3.3 Surface pre-treatment
5.3.4 Micro-arc oxidation
5.3.4.1 Generator characteristics
13 5.3.4.2 Electrolyte
5.3.4.3 Processing parameters
14 5.3.5 Micro-arc oxidation post-treatments
5.3.6 Water quality
5.3.6.1 General
5.3.6.2 Electrolyte
5.3.6.3 Rinsing bath
5.4 Periodic bath chemical analysis
15 5.5 Re-processing
5.6 Glass bead blasting of the friable/porous layer
5.7 Machining
6 Test specimens requirements
6.1 General
16 6.2 Materials
6.3 Tests for the qualification
6.4 Periodic tests
7 Parts requirements
7.1 Conditions of parts prior to the treatment
7.2 Inspections before the processing
7.3 Inspections after micro-arc oxidation
17 8 Quality assurance
8.1 Process approval
8.2 General
18 Annex A (normative)Tests on specimens for the qualification
22 Annex B (normative)Periodic tests on test specimens
24 Annex C (normative)Tests on parts
25 Annex D (normative)Wear resistance test
BS EN 4881:2023
$142.49