The Eloxal process

VC4.4.6.2
The Eloxal process
The Eloxal process

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Description

Anodic oxidation of aluminium treats the surface of aluminium in a way that it is a robust and attractive material. Using electolysis, the surface of aluminium is oxidised. The resulting oxide layer is very hard and can even be dyed.

In this experiment, aluminium is oxidised. The different properties of the non-oxidised and oxidised aluminium are compared.

Components of equipment sets

1 6644071  8  Electrochemistry demonstration unit, CPS LD
1 666425  4  Panel frame C50, two-level, for CPS LD
1 666472  4  Table for electrochemistry, CPS LD
1 664401  4  Electrochemistry accessories set LD
1 667035 Crucible tongs 200 mm LD
1 6659531  4  Dropping pipette 150 mm x 7 mm Ø LD
1 6659541  8  Rubber bulb LD
1 664130  4  Beaker, Boro 3.3, 250 ml, squat LD
1 602740  4  Petri dish, 120 mm LD
1 666839  4  Magnetic stirrer with hotplate LD
1 666851  4  Stirring magnet, 25 mm x 6 mm Ø, circular LD
1 6700400  4  Acetone, 250 ml LD
GHS02GHS07 Danger H225 H319 EUH066 H336
1 6747920  4  Sulfuric acid, diluted, approx. 2 N (= 10 %), 500 ml LD
GHS05 Warning H290 H315 H319
1 6738400  4  Sodium hydroxide solution, diluted, aprox. 2 M, 500 ml LD
GHS05 Danger H314 H290
1 6753400  4  Water, pure, 1 l LD
1 additionally required: dye, e.g. eosin or fluorescein

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C4.4.6.2 The Eloxal process
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