A Study of Substituted Aliphatic Sulphides on the Corrosion Behaviour of Zinc in Ammonium Chloride Solution

Abstract

Sulphur containing organic compounds decreases the corrosion rate by increasing the hydrogen over potential on zinc metal due to their electron donating groups. Their inhibiting effect was found to be associated with their adsorption on the active centers of the metal. The inhibition efficiencies of some aliphatic sulphides in ammonium chloride solution have been studied by weight loss studies, polarization and impedance measurements. The effect of substituent groups is correlated with their inhibition performance. These studies due to their relevance in ZnManganese dry batteries assume their importance.

A Study on Corrosion Protection of Aluminium Surface by Chlorine Substituted Piperidin-4-One in Sulfuric Acid Medium

“…The potentiodynamic polarization and electrochemical impedance were done when the potential of the working aluminium electrode reaches the steady value E corr (by varying not˂than2mV/min). By sweeping the potential in the predetermined range from -ve to +ve at a rate of 10 mV/sec, the potentio dynamic polarization study was done 9 .The various corrosion kinetic parameters are obtained from this study on aluminium with and without adding the inhibitor of different concentration. Electrochemical impedance analysis was done with AC signal having an amplitude of 5mV.…”

“…Fig. -7 Nyquist impedance spectrum semicircle shape infers by using charge transfer resistance, Rct, with the double aye rcapacitor Cdl the electrode interface under analysis can conditionally be expressed 9 . The change in double layer capacity Cdl value infers that the organic inhibitor molecule is adsorbed on the aluminium surface 12,13 .…”

Electro chemical investigation on the corrosion behavior of ZA- 27 alloy in 1M Na2SO4 in the presence of cationic surfactants as inhibitors

“…Studies of the effect of organic additives on the corrosion rate of zinc had been the subject of many investigators [20][21][22][23][24][25]. Hence, the study on corrosion of zinc based alloys and its control is an active area of research.…”

Inhibiting Action of Quaternary Ammonium Salts on the Corrosion Behaviour of Za-27 Alloy in 1m Na2so4

“…Nitrogen-containing compounds are commonly applied as corrosion inhibitors .The dissolution behavior of zinc in acidic and nearly neutral media is known to be inhibited by nitrogen and sulfur-containing organic compounds. Studies of the effect of organic additives on the corrosion rate of zinc had been the subject of many investigators [20][21][22][23][24][25]. Hence, the study on corrosion of zinc based alloys and its control is an active area of research.…”