Indexed by:期刊论文
Date of Publication:2017-11-02
Journal:中国表面工程
Included Journals:EI、CSCD
Volume:30
Issue:6
Page Number:95-102
ISSN No.:1007-9289
Key Words:生物材料;Fe-Zn合金;电沉积技术;血管支架;生物可降解
Abstract:铁具有较高的力学性能和良好的生物相容性,是极具潜力的可降解血管支架材料,但难以在规定的治疗期内完成降解是其面临的主要问题.在前期工作中利用电沉积技术制备出Fe-5Zn合金.为进一步优化其显微组织,将阴极平均电流密度由3.0 A/dm2降至1.0 A/dm2,控制电解液pH值在2.3左右,电沉积制备出成分均匀、组织细小致密,且具有(112)择优取向的Fe-5Zn单相固溶体合金.该合金经800℃氩气保护再结晶退火后,显微硬度由681 HV0.1降至287 HV0.1,材料韧性得到改善.同时合金中有耐蚀性较高的铁、锌氧化物相析出,增加了微阴极数量.动电位极化曲线测量和模拟体液静态浸泡试验结果显示,热处理后的Fe-5Zn合金自腐蚀电位为-0.89 V,自腐蚀电流密度为1.77×10-6A·cm-2,腐蚀速度则为0.259 mg·cm-2d-1,降解性能优于常规纯铁.
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Associate Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Gender:Male
Alma Mater:Dalian University of Technology
Degree:Doctoral Degree
School/Department:School of Materials Science & Engineering
Discipline:Materials Science. Biomedical Engineering
Business Address:Room 224
School of Materials Science and Engineering,
Dalian University of Technology,
Liaoning 116024,
P. R. of China
Contact Information:15641198386
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