15. Corrosion of metallic biomaterials
Authors of the chapter: Mikhail Zheludkevich, Sannakaisa Virtanen
Metallic materials have been used as implants in dentistry, in orthopaedics and as cardiovascular stents for decades. However, corrosion of metals in the human body is a key factor, which defines the durability of the implant and biocompatibility. The corrosive degradation can compromise the mechanical properties of metallic implants but also can lead to release of significant amount of metal cations causing undesirable biological effects and often rejection of the implant. Considering the aggressiveness of body fluid environments, alloys forming a strong passive film are required for permanent implants, such as Ti alloys, stainless steels, and CoCr alloys, just to mention a few. However, cyclic loads and macro-/micro-wear can cause a local depassivation and initiation...
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Corrosion of metallic biomaterials
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