Deposition and characterization of biodegradable Fe-O films

作     者：Zhu, Shengfa Xu, Li Liu, Hengquan Zhang, Yu Sun, Hong Huang, Nan 

作者机构：Key Lab. of Advanced Technology of Materials Education Ministry of China Southwest Jiaotong University Chengdu 610031 China China Academy of Engineering and Physics Mianyang 621900 China 

出 版 物：《Zhenkong Kexue yu Jishu Xuebao/Journal of Vacuum Science and Technology》 (Zhenkong Kexue yu Jishu Xuebao)

年 卷 期：2009年第29卷第3期

页      面：236-240页

核心收录：

主　　题：Thin films 

摘      要：The Fe-O films were deposited on pure iron substrates by immersion ion implantation and deposition (PIII&D) to improve the medical performance of stents. The microstructures and mechanical properties of the films were characterized with X-ray diffraction (XRD), glancing angle X-ray diffraction (GAXRD), and X-ray photoelectron spectroscopy (XPS) and conventional mechanical probes. The impact of film growth conditions on the films was studied and the corrosion characteristics of the Fe-O films were evaluated with the simulated body fluid (SBF). The results show that the oxygen flow rate strongly affects the phase structures of the Fe-O films and the interfacial adhesion. For instance, Fe-O forms at low oxygen flow rates;whereas at an increased oxygen flow rate, FeO phase changes into Fe3O4. phase. At an oxygen flow rate of 3.4 sccm, Fe-O films with high corrosion resistance and fairly strong interfacial adhesion can be grown on iron substrates. We suggest that Fe-O films coated stainless steel be a potential material for stent fabrication.