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METALLIC BIOMATERIALS IN BODY FLUID AND THEIR SURFACE MODIFICATION

机译:体液中的金属生物材料及其表面改性

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Surface oxide films on metallic materials play an important role not only as an inhibitor of corrosion but also as a factor governing biocompatibility. In this paper, the composition of surface oxide film on metallic biomaterials and their change in human body were reviewed with empirical data. Metal ion dissolution from the materials was also considered. In particular, preferential release of specific elements from materials under wear was considered. Released metal ions do not always combine with biomolecules to appear toxicity because active ion immediately combine with a water molecule or an anion near the ion to form an oxide, hydroxide, salt, or complex. In addition, surface modification techniques to improve corrosion and wear resistances and bone conductivity were reviewed. Effect of calcium ion implantation into titanium for improvement of its bone conductivity is given as an example.
机译:金属材料上的表面氧化膜不仅发挥着重要作用,不仅是腐蚀的抑制剂,而且是一种控制生物相容性的因素。本文用经验数据审查了金属生物材料上表面氧化膜的组成及其体内变化。还考虑了来自材料的金属离子溶解。特别地,考虑了从磨损的材料中释放特定元素。释放的金属离子并不总是与生物分子组合以出现毒性,因为活性离子立即与水分子结合或离子附近的阴离子以形成氧化物,氢氧化物,盐或复合物。此外,综述了改善腐蚀和耐磨性和骨电率的表面改性技术。给出钙离子注入到钛中提高其骨电片的钛的影响。

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