Corrosion Resistance and Biocompatibility of Passivated NiTi

作者: Alan R. Pelton , Christine Trepanier , Ramakrishna Venugopalan

DOI: 10.1007/978-3-642-59768-8_3

关键词: PseudoelasticityMaterials scienceNickel titaniumSupport systemBiocompatibilityNickel contentShape-memory alloyAlloyMetallurgyCorrosion

摘要: Equiatomic nickel-titanium (NiTi) or Nitinol possess a unique combination of properties, including superelasticity and shape memory, which are very attractive for biomedical applications. NiTi has been used in orthopedic orthodontic implants several decades contributed to significant improvements these fields [1, 2]. This alloy is rapidly becoming the material choice selfexpanding stents, graft support systems, filters, baskets various other devices minimally invasive interventional procedures (Fig. 1) [1,3]. While superior performance over conventional engineering materials well documented [1,4,5], high nickel content (55 weight % Ni) itspossible influence on biocompatibility continues be an issue concern. concern further complicated by conflicting literature corrosion resistance.

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