医用316L不锈钢支架表面沉积(Fe/Pd)_n薄膜的研究  

Deposition of (Fe/Pd)_n Film on Medical 316L Stainless Steel Stent Surface

作　　者：胡涛[1,2,3] 李争显[2] 麻西群[2] 周廉[2] 介万奇[3] 王海昌[1] 

机构地区：[1]第四军医大学,陕西西安710032 [2]西北有色金属研究院,陕西西安710016 [3]西北工业大学,陕西西安710072

出　　处：《稀有金属材料与工程》2009年第8期1437-1440,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(30470486);中国博士后科学基金面上资助金(20070410383);中国博士后科学基金特别资助金(200801439)

摘　　要：采用真空电弧离子镀技术,在医用316L不锈钢支架上沉积近等原子比的(Fe/Pd)n多层膜。用X射线衍射、扫描电镜、电子能谱研究(Fe/Pd)n多层膜的晶体结构、形貌和成分,分析相的转变。用CTCC-1数字磁通磁场测量仪测量样品的磁性。结果表明:医用316L不锈钢支架表面磁性膜的最佳结构为"Pd/Fe/Pd",经扩散热处理后,(Fe/Pd)n薄膜从fcc结构转变为fct结构,薄膜均匀、致密、结合强度良好,有效磁场强度可达5×10-4T以上,有效磁性可维持6个月。Near-equiatomic （Fe/Pd）n multilayer films were deposited on the surface of medical 316L stainless steel stems by vacuum arc ion plating technology. The crystal structure, morphology and component of （Fe/Pd）n multilayer films were studied by XRD, SEM, and electronic energy spectrum and the phase transformation was also analyzed. The magnetic performances of the samples were detected by CTCC-1 numeral magnetic flux and magnetic field measurement instrument. The results indicate that the optimum structure of superficial magnetic films on medical 316L steel stents is ＂Pd/Fe/Pd＂. After diffusion heat treatment, （Fe/Pd）, films changed from face-center-cubic （fcc） structure to face-center-tetragonal （fct） structure. The film is uniform with high density and good bonding strength. At the same time, its effective magnetic strength is to up to 5×10^-4 T for 6 months.

关 键 词：316L不锈钢 磁性薄膜 电弧离子镀 (Fe/Pd)n薄膜 

分 类 号：R318.08[医药卫生—生物医学工程] O484[医药卫生—基础医学]