cathodic polarization

cathodic polarization

[kə′thäd·ik ‚pō·lə·rə′zā·shən]
(physical chemistry)
Portion of electric cell polarization occurring at the cathode.
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References in periodicals archive ?
In addition, the obtained results revealed that the cathodic polarization curve of Zn--Ni--Fe alloy deposition (29) lies between the polarization curves of Zn and Ni or Zn and Fe.
cm would--in general--yield at least 100 mV cathodic polarization.
The time dependence of the anodic current response, which appears after a certain cathodic polarization, when the potential is returned to a value slightly more positive than open circuit potential, was also recorded.
After completion of the cathodic polarization, delamination of the coating is measured by placing tape across the scribe and pulling to remove the portion of the coating that has disbonded.
This is in contrast with Leidheiser (27), who pointed out that no delamination takes place when coated metal is immersed in a strong NaOH solution, which suggested that disbondment was primarily related to the cathodic polarization.
The anodic and cathodic polarization curves were recoded using a sweep potential test in the range [+ or -]1500 mV with respect to the open circuit potential (OCP) with a scanning rate of 1 mV/s.
1 recommends the use of coupons or an electrical resistance (ER) probe in conjunction with the -850 mV off-potential or the 100 mV cathodic polarization criterion, not included in the previously noted standards.
The cathodic polarization attacks the ED paint layer by opening the pores, thereby allowing access of the electrolyte to the metal surface.
Accordingly, a minimum amount of cathodic polarization is required to achieve complete cathodic protection.
The cathodic polarization and cyclic voltammetry techniques were used to explain deposition process.
Provides a means to illustrate the beneficial effect of cathodic polarization on the estimated rate of external corrosion of the pipeline.