Corrosion behaviour of metals in artificial saliva in presence of spirulina powder

S. Rajendran¹*, J. Paulraj¹, P. Rengan², J. Jeyasundari³ and M. Manivannan⁴

¹Servite College of Education, Thogaimalai- 621 313, Tamilnadu, India

²Department of Chemistry, Yadava College Co-educational, Madurai, India.

³Department of Chemistry, SVN College, Madurai, India

⁴Department of Chemistry, Chettinad College of Engineering and Technology, Karur, India.

*Corresponding author. E-mail: susairajendran@gmail.com.

Accepted 29 May, 2009

   Abstract

Corrosion resistance of three metals namely, SS 316L, mild steel (MS) and mild steel coated with zinc (MS-Zn) has been evaluated in artificial saliva in the absence and presence of spirulina.  Potentiodynamic polarization study and AC impedance spectra have been used to investigate the corrosion behaviour of these metals. The order of corrosion resistance of metals in artificial saliva, in the absence and also in the presence of spirulina was SS 316L > MS > MS-Zn.

Key words: Artificial saliva, corrosion, metals, spirulina, dentistry, oral hygiene.