Why can't stainless steel be put together with carbon steel tube?
An electronic passage formed by wire bonding or direct contact. The carbon in the carbon steel tube loses its electrons to the stainless steel tube and the surface is absorbed by the etchant.
Potential difference: the stainless steel pipe with a more positive potential and the carbon steel pipe with negative potential are even connected. The stainless steel tube is cathode, and the carbon steel tube is anode. The greater the potential difference between the two, the greater the galvanic corrosion tendency.
Electrolyte: the contact area of two metals is covered with electrolyte or submerged. The iron in the carbon tube loses electrons to form ions into the solution, and the electrons on the surface of the stainless steel tubes are taken away by the corrosive agents in the electrolyte (such as oxygen in the air). Electrolytes become ionic channels.
