Electrochemical corrosion protection

Electrochemical corrosion protection
Electrochemical corrosion protection

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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 6644071  8  Electrochemistry demonstration unit, CPS LD
1 301339  4  Stand bases, pair LD
1 664401  4  Electrochemistry accessories set LD
1 6677967  8  Compact Balance EMB200-2 LD
1 665795  4  Volumetric flask, Boro 3.3, 500 ml LD
1 665793 Volumetric flask, Boro 3.3, 100 ml LD
1 665953 Dropping pipette, 7 x 150 mm, 10 pcs. LD
1 665954 Rubber bulbs, 10 pcs LD
1 665008  4  Funnel, PP, 50 mm diam. LD
1 666967  4  Spoon-ended spatula, stainless steel, 150 mm LD
1 6735700  4  Sodium chloride 250 g LD
1 6726100  4  Potassium ferrocyanide (III), 50 g LD
1 6742500  4  Phenolphthalein solution, 100 ml LD
GHS02GHS08 Danger H225 H350 H341
1 6731000  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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