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Central University of Tamil Nadu 
S. Ramya, D. Rajeswari, M. Palanisamy, D. Gopi and L. Kavitha 
Corresponding Authors:
L. Kavitha 
DOI #:
Corpus ID: 55404344 
Corrosion and biodegradability evaluation of magnesium substituted porous hydroxyapatite/polyethylene dioxy thiophene bilayer coating on 316l stainless steel for orthopaedic applications 
International Journal of ChemTech Research 
316L SS; Polyethylene dioxy thiophene; Substituted hydroxyapatite; Electrochemical impedance spectroscopy, Polarisation. 
Surgical grade stainless steel (316L SS) is a widely used biometallic implant material in orthopedic applications. The need to reduce costs in public health services has compelled the use of 316L SS as the most economical alternative for orthopedic implants. However, the release of metallic ions is evident from the biometallic implant in physiological solution. For this reason, it is essential for developing bilayer coatings to improve the corrosion resistance and bioactivity of 316L SS. Conducting polymers are used as surface coatings to protect metals against corrosion and moreover it is an environment friendly and effective method. The present study deals with the successful development of bilayer coatings by electropolymerisation of polyethylene dioxy thiophene (PEDOT) on 316L SS followed by the electrodeposition of magnesium (Mg) substituted hydroxyapatite (Mg-HA). The bilayer coatings were characterised by Fourier transform infrared spectroscopy, high resolution scanning electron microscopy, energy dispersive X-ray analysis. The corrosion resistance of the obtained coatings was also investigated in Ringer’s solution by electrochemical techniques such as potentiodynamic polarisation and electrochemical impedance spectroscopy. Thus, the PEDOT/Mg-HA bilayer coated 316L SS can serve as a prospective biomaterial for orthopaedic applications.  
Entered by:
Kavitha Louis on 2020-09-02 
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