Abstract
Metals and alloys are widely used in dentistry, medicine and restoration of defected bone as artificial implants or restorative materials. Bone implants are mainly made of metals to be able to withstand mechanical stresses during operation. Stainless steel 306L is the most common alloy used in the manufacture of bone implants. The main characteristic of this alloy is to have good mechanical properties , but there is always concern about the corrosion resistance of them in physiological and bioactive solutions. In this study, Hardystonite nano-bioceramic was prepared by sol-gel method and after surface preparation was applied on 316L steel at 3 and 5 min time durations and 30 and 50 V voltages using electrophoretic method. The corrosion resistance of 316L stainless steel in ringer solution was measured by potentiodynamic polarization test at constant temperature of 37 °C before and after coating process which due to very good bioactivity of Hardystonite ceramic the corrosion resistance of 316L steel has also increased. The surface microstructure of the coated specimens was investigated using a scanning electron microscope (SEM). The composition of phases and elemental characterization of the coatings was determined by X-ray diffraction method. Results show that the obtained coating on 316L steel is nearly uniform and has no apparent defect at 50 V and 5 min. The Hardystonite coating has improved the corrosion resistance of the substrate so that the corrosion current density in the coated samples is less than the uncoated ones and the corrosion resistance of 316L steel has increased 9 times. The results showed that Hardystonite bioceramic coating applied by electrophoretic method can improve the corrosion behavior and consequently the biocompatibility of metallic implant in medicine applications .
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© 2019 The Minerals, Metals & Materials Society
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Bagherpour, I. (2019). Fabrication of Hardystonite Nano-bioceramic Coating on 306L Stainless Steel Substrate Using Electrophoretic Method and Evaluation of Its Corrosion Resistance to Improve Medical Performance. In: TMS 2019 148th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05861-6_13
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DOI: https://doi.org/10.1007/978-3-030-05861-6_13
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