作　　者： ; ; ; ; ;

机构地区： 大连理工大学材料科学与工程学院三束材料改性教育部重点实验室

出　　处： 《无机材料学报》 2005年第4期940-946,共7页

摘　　要： 用电弧离子镀设备,在医用不锈钢基体上沉积Ti/TiN纳米多层薄膜,考察薄膜在Troyde's模拟体液中的抗腐蚀性能.结果表明,在中性与酸性模拟体液中316L+Ti/TiN(45/45s) 体系的击穿电位分别提高5倍和2倍,腐蚀电流密度为基体的1/8与1/3,明显降低发生局部腐蚀的敏感性,但滞后环的出现说明薄膜被击穿后自修复能力较差.分析说明薄膜的纳米多层结构与纯Ti层的存在可有效提高医用不锈钢在Troyde's模拟体液中的抗点蚀能力. Nano-multilayered Ti/TiN films were synthesized on biomedical 316L stainless steel through the Bulat-6 arc ion plating system. The anti-corrosion performances of different films were studied elementarily in Troyde's simulated bodily fluid. The results show that it is about 5 and 2 times, for the breakdown potential of 316L+Ti/TiN in neutral and acidic Troyde's simulated bodily fluid, higher than that of 316L stainless steel, and one eighth and one third of the corrosion current density of the substrate, respectively, which indicates that the sensitivity of local corrosion for the substrate is depressed greatly. However, the delay in reverse cathodic scanning is caused by the worse self-repairable property of Ti/TiN film. The anti-corrosion performance of 316L+Ti/TiN, in Troyde's simulated bodily fluid, is improved effectively by the existence of the nano-multilayered structure and pure titanium layer.

关 键 词： 纳米多层薄膜 抗腐蚀性能 医用不锈钢 模拟体液

领　　域： [金属学及工艺] [金属学及工艺] [一般工业技术]