![]() The appropriate degradation rate of zinc and zinc-based alloys has made them more suitable to clinical demands,. The standard electrode potential of pure zinc is –0.76 V NHE, which is between that of pure magnesium (–2.37 V NHE) and pure iron (–0.44 V NHE). īecause of the aforementioned drawbacks of magnesium- and iron-based alloys, zinc and zinc-based alloys have recently emerged as an ideal biodegradable metal, due to their more suitable corrosion rate as compared with magnesium- and iron-based alloys. In contrast, the degradation rate of iron and iron-based alloys is too slow and the corrosion products of iron and iron-based alloys are difficult to be metabolized and absorbed by the human body, ,. However, some studies found that the disadvantage of fast degradation rate of magnesium-based implants will cause premature loss of structural integrity in the physiological environment, and bring undesired host response after implantation,. įor the past few years, biodegradable metals have become intriguing research topics. ![]() Unlike traditional metallic materials, biodegradable metals have unique advantages: as temporary implants, they can avoid secondary surgery, and accelerate the healing process. ![]() Metallic biomaterials including pure Ti, Ti alloys, Co-Cr-(Mo) alloy, 316 L stainless steel (SS) have been widely used for biomedical applications. The clinical applications of biomedical metallic materials have a history of more than 200 years. ![]()
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