Analysis of the causes of local corrosion in stainless steel containers
In the process of using stainless steel containers, local corrosion may occur due to careless maintenance, which may affect the use and life of stainless steel containers. So why does the stainless steel container have local corrosion? Let's take a brief introduction.
1, electrochemical corrosion
Electrochemical corrosion occurs when two or more different metals are contacted and joined in the presence of a conductive liquid (electrolyte).
2, etching corrosion
A stone may be clogged in a tube of a copper alloy condenser. At this point, the downward flow direction of the stone will immediately cause turbulence. This causes etch or abrasion of the copper protective oxide film and exposes the unprotected copper alloy metal to cause further corrosion.
3, crevice corrosion
Crevice Corrosion or Oxygen Concentration Cell corrosion occurs when a certain deposit or deposit occurs on the metal surface.
4, pitting
Usually caused by a defect on the metal surface. This reaction is repeated and rapidly produces metal perforation.
Of course, the local corrosion of stainless steel containers also has several conditions such as peeling corrosion, selective leaching or de-alloying component corrosion, intergranular corrosion, stress corrosion cracking and stress corrosion cracking. We also need to pay attention to the actual application process.
