Research Article
Anodisation of Aluminium Alloys by Micro-Capillary Technique as a Tool for Reliable, Cost-Efficient, and Quick Process Parameter Determination
Table 3
IC particles in Al alloys and their behaviour during sulphuric acid anodisation.
| | Phase | Evidence (this work) | Behaviour during sulphuric acid anodisation (published) |
| | Mg2Si (β) | Verified | Dissolution, cavity formation [17] | | MgZn2 (, M, ) | Verified | Passivation above 5 V (SCE) [25] | | Mg32Zn49 (T′) | Verified | Partial dissolution, partial oxidation [17] | | Al2CuMg (S) | Verified | Preferential oxidation above 0 V (SCE) [12] | | Al6Mn | | Partial dissolution, embedment [17] | |
Al-2%Cu (α) | | Yellow coating, enhanced porosity [17], copper enrichment at interface below 3 V (SCE) [9, 13] | | Al2Cu (θ) | | Fast oxidation [17], preferential oxidation above 1.8 V (SCE) [12] | | Al7Cu2Fe | Verified | Formation of Cu sponge [25], preferential oxidation above 1.8 V (SCE) [12] | | Al3Fe (β) | | Partial dissolution, embedment [17], preferential oxidation above 2.2 V [12] | | AlFeSi phases (α) | | Partial dissolution, partial oxidation [17] |
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