Electrochemical Studies on the Passive Film Integrity of Titanium Under Seawater Biofilms

被引：13

作者：

Anandkumar, B. ^{[1
]}

George, R. P. ^{[1
]}

Kamaraj, K. ^{[1
]}

Parvathavarthini, N. ^{[1
]}

Mudali, U. Kamachi ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Corros Sci & Technol Grp, Kalpakkam 603102, Tamil Nadu, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2017年 / 70卷 / 04期

关键词：

Biofilms; Biofouling; Titanium; Electrochemical techniques; Cyclic voltammetry; Impedance spectroscopy; MICROBIOLOGICALLY INFLUENCED CORROSION; METAL-SURFACES; CYCLIC VOLTAMMETRY; STAINLESS-STEEL; MARINE BIOFILMS; ENNOBLEMENT; ALLOYS; OXYGEN; ELECTRODES; REDUCTION;

D O I：

10.1007/s12666-016-0899-3

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

An attempt was made to explore the electrochemical behavior of Titanium (Ti) condenser material under seawater biofilms. The Ti specimens with seawater biofilm were subjected to microscopic examinations and electrochemical studies such as cyclic voltammetry (CV), electrochemical impedance spectroscopy, open circuit potential monitoring and anodic polarization. The CV curves of Ti specimens with 15 days old biofilms showed characteristic redox peaks with high cathodic current indicating the electroactive biofilms. Similarly impedance spectra clearly showed two time constants with decrease in charge transfer resistance and increase in capacitance as the biofilms growth increased on the Ti specimens. Polarization curve showed the ennoblement of corrosion potential and increase in passive current with the growth of biofilm on Ti. Based on these data, a possibility of Ti passive film integrity loss by electroactive seawater biofilms has been discussed.

引用

页码：1075 / 1081

页数：7

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