Tribogalvanic effect
The shift of the standard electrode potential of a metal in the negative direction by the entire amount of the electrochemical series through the action of mechanical impacts on the electrode surface was called the tribogalvanic effect .
The cause of this effect is the generation of negative affinity or positive free enthalpy through extreme thermodynamic imbalances due to the action of mechanical energy on the metallic solid.
The discovery was made in 1979 by the German chemist Karsten Peter Thiessen .
example
Galvanizing of copper without external current by mechanical processing of the copper surface in a neutral zinc chloride solution with simultaneous formation of Cu / Zn mixed crystals (mechanically induced alloying process).
Individual evidence
- ↑ Karsten Peter Thiessen: Tribo-electroplating - a new field of application of tribochemistry. In: Journal of Chemistry . 14, 1974, 4, pp. 135-141, doi : 10.1002 / zfch.19740140403 .
- ↑ Karsten Peter Thiessen: The energetics of the tribogalvanic effect. In: Journal of Chemistry. 16, 1976, 1, p. 9.