European Journal of Biomedical and Pharmaceutical Sciences

INFLUENCE OF BERMUDA GRASS EXTRACT ON CORROSION RESISTANCE OF SS 316L ALLOY AND SS 18/8 ALLOY IN PRESENCE OF ARTIFICIAL SALIVA

P. Nandhini*, J. Maria Praveena, S. Rajendran and Abdulhameed Al-Hashem

ABSTRACT

The corrosion resistance of SS 316L alloy and SS 18/8 alloy in artificial saliva, in the absence and presence of Bermuda grass extract has been investigated by impedance study. Corrosion parameters such as charge transfer resistance (Rt), double layer capacitance (Cdl) and impedance values have been calculated, from the Nyquist and Bode plots. It is observed that for SS 316L system, the corrosion resistance increases in the presence of Bermuda grass juice extract. So people implanted with orthodontic wire made of SS 316L alloy need not hesitate to take Bermuda grass juice orally. It is also observed for SS 18/8 system, the corrosion resistance decreases in the presence of Bermuda grass juice extract. So people implanted with orthodontic wire made of SS 18/8 alloy should avoid taking Bermuda grass juice orally.

Keywords: Artificial saliva, corrosion resistance, Bermuda grass juice, SS 316L alloy, SS 18/8 alloy.