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The use of the dye CI Acid Blue 45 in the electrolytic colouring of anodised aluminium
Author(s) -
Theohari S.,
TsangarakiKaplanogjou I.,
Moshohoritou R.
Publication year - 1998
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1998.tb01983.x
Subject(s) - anodizing , aluminium , electrolyte , alizarin , dyeing , chemistry , tin , corrosion , hue , nuclear chemistry , materials science , inorganic chemistry , metallurgy , electrode , organic chemistry , artificial intelligence , computer science
The electrolytic colouring of anodised aluminium from acidic tin(n) sulphate solutions in the presence of the dye Alizarin Saphirol B (CI Acid Blue 45) has been investigated. The method combines electrolytic colouring and adsorptive dyeing in a single stage and expands the range of colours which can be produced by the electrolytic colouring process. A dye concentration in the acidic tin(ii) sulphate colouring bath of 7. 5 g/l and a treatment time of 1–2 min, at 15 V (50 Hz), results in a grey‐blue hue with high fastness properties and resistance to corrosion. The mechanism of the action of the dye is discussed.