Hab hier was gefunden:
http://waterfuelcell.org/phpBB2/viewtopic.php?t=521 - "Stainless steel is 'stainless' because of the chromuim in it. The chromium oxidises when it comes into contact with oxygen. This creates an invisible, extremely thin film of chromuim oxide (Cr2O3). This film of chromium oxide self-heals like galvanised steel, but unlike galvanised steel the layer is only atoms thick. Chromium oxide is an insulator, with a dielectric constant of around 13, but at literally only atoms thick, simply touching it will break through this insulation. Now, the interesting thing about stainless steel is that it will actually corrode badly in an OXYGEN FREE environment. It is the continual presence of oxygen in the air or water that allows the oxide film to self-heal and maintain itself. Now, think about what we do when we use ss as an anode. We immerse the ss in water containing free oxygen which maintains its protective oxide layer, but then we attract lots of pure oxygen directly onto it's surface. I believe we are enhancing the oxide layer; thickening the oxide layer and so creating a more formidable dielectric layer. Hence we have a better water capacitor that will hold a charge for longer" Water as the dielectric was always a bug-bear of mine, as I never really thought this possible, or likely... put simply tap water conducts. Then the importance of conditioning of the plates came to light more and more, and with it realisation that the conditioning was actually forming an insulating dielectric layer. Water is not the dielectric."
