Highly Biocompatible Porous NiTi Alloys
Nickel Titanium alloys have proved to be a perfect choice for materials used for medical devices like catheters, pacemakers and stone removal mesh. However, there are some challenges related to the shape and size modifications required to suffice the applications. The alloy needs improvements particularly in the areas of porosity for bone replacement, radiopacity, super elasticity and fatigue strength. There is a wide range of applications of biocompatible Porous NiTi alloys in the areas of inter body fusion devices, synthetic bone grafting, etc. Although it cannot be denied of the possibility of high corrosion factor of Porous NiTi alloys as compared to solid NiTinol due to greater surface area in contact with the body fluids. Such cases include definite surface preparation to cater to the need for increased biocompatibility. This paper includes the synthesis of porous NiTi alloys through the sintering process along with a check of the surface treatments and its effects on the properties related to corrosion of Porous NiTinol. The Alloys were subjected to different treatments like dry heating, boiling in water and passivation. The corrosion resistance, after and before the treatments were evaluated.
Abidi, I. H., Khalid, F. A., Farooq, M. U., Hussain, M. A., & Maqbool, A. (2015). Tailoring the pore morphology of porous nitinol with suitable mechanical properties for biomedical applications. Materials Letters, 154, 17-20.
Aihara, H., Zider, J., Fanton, G., & Duerig, T. (2019). Combustion synthesis porous nitinol for biomedical applications. International journal of biomaterials, 2019.
Geetha, M., Singh, A. K., Asokamani, R., & Gogia, A. K. (2009). Ti based biomaterials, the ultimate choice for orthopaedic implants–a review. Progress in materials science, 54(3), 397-425.
Huang, W., Ding, Z., Wang, C., Wei, J., Zhao, Y., & Purnawali, H. (2010). Shape memory materials. Materials today, 13(7-8), 54-61.
Kapoor, D. (2017). Nitinol for medical applications: A brief introduction to the properties and processing of nickel titanium shape memory alloys and their use in stents. Johnson Matthey Technology Review, 61(1), 66-76.
Li, Y.-H., Rong, L.-J., & Li, Y.-Y. (2002). Compressive property of porous NiTi alloy synthesized by combustion synthesis. Journal of alloys and compounds, 345(1-2), 271-274.
O’Brien, B., Carroll, W., & Kelly, M. (2002). Passivation of nitinol wire for vascular implants-a demonstration of the benefits. Biomaterials, 23(8), 1739-1748.
Pelton, A. R., Dicello, J., & Miyazaki, S. (2000). Optimisation of processing and properties of medical grade Nitinol wire. Minimally Invasive Therapy & Allied Technologies, 9(2), 107-118.
Shabalovskaya, S., Rondelli, G., Anderegg, J., Simpson, B., & Budko, S. (2003). Effect of chemical etching and aging in boiling water on the corrosion resistance of nitinol wires with black oxide resulting from manufacturing process. Journal of Biomedical Materials Research Part B: Applied Biomaterials: An Official Journal of The Society for Biomaterials, The Japanese Society for Biomaterials, and The Australian Society for Biomaterials and the Korean Society for Biomaterials, 66(1), 331-340.
Thierry, B., Tabrizian, M., Trepanier, C., Savadogo, O., & Yahia, L. H. (2000). Effect of surface treatment and sterilization processes on the corrosion behavior of NiTi shape memory alloy. Journal of biomedical materials research, 51(4), 685-693.
Wang, J., Zhou, B., Liu, X. S., Fields, A. J., Sanyal, A., Shi, X., Guo, X. E. (2015). Trabecular plates and rods determine elastic modulus and yield strength of human trabecular bone. Bone, 72, 71-80.
Wang, X., Xu, S., Zhou, S., Xu, W., Leary, M., Choong, P., Xie, Y. M. (2016). Topological design and additive manufacturing of porous metals for bone scaffolds and orthopaedic implants: A review. Biomaterials, 83, 127-141.
Copyright (c) 2020 International Journal of Fundamental Physical Sciences (IJFPS)
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.