Experimental apparatus for the study of materials corrosion
CH561 is a fully equipped laboratory stand designed for the in-depth study of corrosion phenomena. The stand allows up to eight independent experiments to be run simultaneously,
covering a wide range of corrosion types and test conditions. Each test cell provides reproducible conditions and statistically meaningful results by simultaneously immersing three
identical samples, thereby eliminating the influence of material variability.
Key features
Up to 8 simultaneous corrosion cells
3 identical samples per cell — eliminates anomalous results caused by metallurgical variability
Metal surface of known area exposed to the test liquid — quantifiable results
Sample mounting minimizes side effects and ensures experiment reproducibility
Agitation with air or inert gas — enables the study of dissolved oxygen influence
Corrosion rate determined both by visual observation and by direct weighing of the samples after a known immersion period
Portable digital pH meter with microsensor, included
Laboratory topics covered
Corrosion behaviour of different metals — rust and passivation, interpreted through the electrode potential series
Galvanic corrosion — study of galvanic couples (steel/copper, steel/zinc) with local cell formation
Influence of pH on the corrosion rate — tests at pH 4, 7 and 9
Influence of salt (NaCl) concentration in the electrolyte solution
Oxygen corrosion — comparison between oxygenated and deoxygenated media (nitrogen purging)
Electrochemical corrosion — the effect of stray voltages between connected metals
Cathodic protection by external voltage — counteracting the corrosion current through polarization
Protection by sacrificial anodes
Corrosion inhibitors — the effectiveness of phosphates and silicates on steel passivation
Stress corrosion — the influence of internal mechanical strains
Use as a test bench for other chemical systems
Included components
Eight test cells made of borosilicate glass, with specially machined lids for mounting the samples
