The Eloxal process

VC4.4.6.2

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

Experiment Instructions

PDF (Experiment description)

C4.4.6.2 The Eloxal process

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The Eloxal process

Description

Components of equipment sets

Experiment Instructions

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