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Electrochemical corrosion protection

C1.5.3.3
Electrochemical corrosion protection
Electrochemical corrosion protection

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Description

In experiment C1.5.3.3, the cathodic protection anode technique is used to prevent electrochemical corrosion. The method is based on the fact that the speed of electrochemical corrosion processes depends on the electrode potential. If that electrode potential is shifted externally, the corrosion can be inhibited or greatly restricted. In the experiment, a zinc electrode is used as a cathodic protection anode. The metal to be protected is conductively connected to a less noble metal; a corrosion element is formed in which the less noble metal (the cathodic protection anode) dissolves while the nobler metal remains protected.

Components of equipment sets

1 664 4071  8  Electrochemistry demonstration unit, CPS LD
1 301 339  8  Stand bases, pair LD
1 664 401  4  Electrochemistry accessories set LD
1 ADAHCB602H Precision Balance, 600 g /0,01g, with USB interface LD
1 665 795  4  Volumetric flask, Boro 3.3, 500 ml LD
1 665 793  4  Volumetric flask, Boro 3.3, 100 ml LD
1 665 953  8  Dropping pipette 150 mm x 7 mm Ø, 10 pieces LD
1 665 954  4  Dropper bulb, 10 pieces LD
1 665 008  4  Funnel, PP, 50 mm diam. LD
1 666 967  8  Spoon-ended spatula, stainless steel, 150 mm LD
1 673 5700  4  Sodium chloride, 250 g LD
1 672 6100  4  Potassium ferrocyanide (III), 50 g LD
EUH032
1 674 2500  4  Phenolphthalein solution, 100 ml LD
GHS02GHS07 Danger H225 H319
1 673 1000  4  Magnesium, ribbon, 25 g LD
GHS02 Warning H228

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) C1.5.3.3 Electrochemical corrosion protection
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Physics
Chemistry
Biology
Technology

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