--Yes the synthesized organic compound can act as corrosion prevention compounds since these compounds exhibiting strong adsorption onto surface with high surface coverage resulting in adherent protective film as barrier that minimize the transport of corrosive species by diffusion means onto the metal surface . In this respect the presence of multi-functional groups, triple bonds and aromatic rings within the structure of organic inhibitors enhances the adsorption process.

--the most familiar and feasible testing methods to find the corrosion inhibition efficiency are:

Infrared spectrophotometer

Langmuir adsorption isotherm

Weight loss measurements

EIS methods

Potentiodynamic polarization

Best regards

Hi,

in order to determine the efficiency of a corrosion inhibitor, one usually compares a parameter which is related to the speed of corrosion of a material in a specific environment (electrochemical: corrosion current density - icorr, physical: mass loss). One then calculates e.g: IE [%] = 100 * (icorr - icorr_Inh) / icorr

You can get icorr from varoius electrochemical experiments or mass loss from simple difference weighing of specimen before and after exposure under your specific conditions.

Best regards,

Andreas

Hi Fathimunnisa

I think it depends upon your system( electrolyte, cathodic reaction and working electrode). The golden technique is weight loss however, if there is localized corrosion i.e. pitting, other electrochemical techniques is preferred.

EIS, EN, Tafel ,.... all can be used accompanied with morphology analysis.

Good Luck

Gobara

Yes, hetero atom containing compounds can act as inhibitor. The efficiency depends on the way it adsorp on the substrate