Portugaliae Electrochimica Acta
ISSN 0872-1904
MUTHUMANI, N. et al. Corrosion Inhibition by Amino Trimethylene Phosphonic Acid (ATMP) -Zn2+ System for Carbon Steel in Ground Water. []. , 30, 5, pp.307-315. ISSN 0872-1904. https://doi.org/10.4152/pea.201205307.
The inhibition efficiency (IE) of Amino Trimethylene phosphonic acid (ATMP) in controlling corrosion of carbon steel immersed in ground water in the absence and presence of Zn2+ has been evaluated by weight loss method. It is observed that the synergistic formulation consisting of 250 ppm ATMP and 10 ppm of Zn2+ has 98% IE. Polarization study reveals that ATMP-Zn2+ system functions as a cathodic inhibitor system. AC impedance study reveals that a protective film is formed on the metal surface.
: carbon steel; corrosion inhibition; synergistic effect; cathodic inhibitor; phosphonic acid.