Selective leaching corrosion

SELECTIVE LEACHING CORROSIONĀ S031

The process fluid selectively removes elements from the piping or any other component that might be exposed to the liquid flow. The mechanism is as follows:

  • Metals are removed from the liquid during a de-ionization or de-mineralizing process.
  • The liquid tries to replace the missing elements as it flows through the system.
  • The un-dissolved metals often coat themselves on the mechanical seal faces or the sliding components and cause a premature seal failure.
  • Heat accelerates the process.

See:

De-ionized (DI) water, D009

Demineralized water, D010

Category

Posted

  • On February 17, 2018