Ti/TiN纳米多层薄膜改性层在Troyde s模拟体液中的抗腐蚀性能

无机材料学报

Ti/TiN纳米多层薄膜改性层在Troyde s模拟体液中的抗腐蚀性能

刘成龙^1,2; 林国强²; 杨大智^1,2; 赵彦辉²; 邓新绿²

1. 连理工大学三束材料改性国家重点实验室; 2. 大连理工大学材料系, 大连 116024

收稿日期:2004-05-14 修回日期:2004-08-03 出版日期:2005-07-20 网络出版日期:2005-07-20

Electrochemical Corrosion of Nano-multilayered Ti/TiN Films on 316L Stainless Steel in the Simulated Bodily Fluid

LIU Cheng-Long^1,2; LIN Guo-Qiang²; YANG Da-Zhi^1,2; ZHAO Yan-Hui²; DENG Xin-Lu²

1. State Key Laboratory of Materials Modification by Laser; Ion and Electron Beams; 2. Department of Materials Engineering; Dalian University of Technology; Dalian 116024; China

Received:2004-05-14 Revised:2004-08-03 Published:2005-07-20 Online:2005-07-20

摘要/Abstract

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.

关键词: Ti/TiN纳米多层薄膜, 抗腐蚀性能, 医用不锈钢, 模拟体液

Abstract: 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.

Key words: nano-multilayered Ti/TiN film, corrosion-resistance, medical stainless steel, simulated bodily fluid

中图分类号:

TG174
TB43

刘成龙,林国强,杨大智,赵彦辉,邓新绿. Ti/TiN纳米多层薄膜改性层在Troyde s模拟体液中的抗腐蚀性能[J]. 无机材料学报.

LIU Cheng-Long,LIN Guo-Qiang,YANG Da-Zhi,ZHAO Yan-Hui,DENG Xin-Lu. Electrochemical Corrosion of Nano-multilayered Ti/TiN Films on 316L Stainless Steel in the Simulated Bodily Fluid[J]. Journal of Inorganic Materials.

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