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首页> 外文期刊>Applied Surface Science >Formation of diamond-like carbon (DLC) film on the NiTi alloys via plasma immersion ion implantation and deposition (PIIID) for improving corrosion resistance
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Formation of diamond-like carbon (DLC) film on the NiTi alloys via plasma immersion ion implantation and deposition (PIIID) for improving corrosion resistance

机译：通过等离子浸入离子注入和沉积（PIIID）在NiTi合金上形成类金刚石碳（DLC）膜，以提高耐腐蚀性

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摘要

NiTi alloys are potentially useful in biomedical application due to their unique superelasticity and shape memory effect. However, the materials are vulnerable to surface corrosion and the most serious issue is out-diffusion of toxic Ni ions from the substrate into body tissues and fluids. In this paper, Diamond-like carbon (DLC) film is fabricated on the NiTi alloys using plasma immersion ion implantation and deposition (PIIID) at room temperature to improve their corrosion resistance and block the out-diffusion of the Ni ions. The results show that the DLC films cannot only improve the corrosion resistance of the NiTi substrate, but also effectively suppress the Ni ions release from the substrate. The reason that the corrosion resistance of the coated samples is markedly improved due to the DLC films formation is systematically investigated.
机译：NiTi合金由于其独特的超弹性和形状记忆效应，可能在生物医学应用中有用。但是，这种材料很容易受到表面腐蚀，最严重的问题是有毒的Ni离子从基材向外扩散到人体组织和体液中。在本文中，在室温下通过等离子体浸没离子注入和沉积（PIIID）在NiTi合金上制备类金刚石碳（DLC）膜，以提高其耐腐蚀性并阻止Ni离子的向外扩散。结果表明，DLC膜不仅可以提高NiTi基体的耐蚀性，而且可以有效抑制Ni离子从基体中释放出来。系统地研究了由于DLC膜的形成而显着改善了涂层样品的耐腐蚀性的原因。

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