Results andDiscussion
ASTMG61
Cyclic Polarization
Cyclic PolarizationElectrochemical CorrosionTesting to
evaluate the pitting potential.
PittingPotential Eb, inmillivolts, determined in a 3000ppmCl-
containingneutral solution:
– Silicon coated coupon: 1460mv
– Bare coupon: 370mv
Pitting potential, Eb, inmillivolts, determined in a 3000ppmCl-
containing acidic solution (1NH2SO4)
– Silicon coated coupon: 927mv
– Bare coupon: 370mv
The increased energy required togenerate pitting is the barrier
towards corrosion suppliedby the Silcosteel
®
-CR treatment.
