纳米钛酸钾生物薄膜在模拟体液中的电化学腐蚀  

Electrochemical corrosion of nano potassium titanate biological film in simulated body fluid

作　　者：张超超 陈恒利 赵立臣[1] 戚玉敏[1] 崔春翔[1] 

机构地区：[1]河北工业大学材料科学与工程学院,天津300130

出　　处：《河北工业大学学报》2017年第4期53-57,共5页Journal of Hebei University of Technology

基　　金：河北省应用基础研究重点项目(11965151D)

摘　　要：以自行设计制备的低模量Ti-25Nb-6Zr-3Mo医用β钛合金为基体材料,采用阳极氧化与水热处理相结合的方法在该合金表面制备出纳米钛酸钾生物薄膜,并通过扫描电子显微镜、表面能谱仪和X射线衍射仪对该生物薄膜进行微结构表征.采用三电极体系,测试了纳米钛酸钾生物薄膜在模拟生理体液中的耐蚀性能.结果表明,纳米钛酸钾生物薄膜在模拟体液中表现出更好的稳定性和耐蚀性,是一种具有很好应用前景的种植体材料.The new low elastic modulus Ti-25Nb-6Zr-3Mo t5 Titanium alloy was designed and prepared by ourselves for biomedical application. Nano potassium titanate biological film was formed in situ on the surface of the alloy by the combi- nation method of anodic oxidation and hydro-thermal treatment. Microstructure characteristics of titanium alloy specimens with nano potassium titanate were studied by a field emission scanning electron microscopy （FE-SEM） equipped with an energy dispersive X-ray spectrometer （EDS） and X ray diffractometer （XRD）, in order to confirm the composition of the film. The three-electrode system was adopted to test the corrosion resistance of nano potassium titanate biological film in simulated body fluid （SBF） （by contrast with the Titanium alloy）. The results haveindicated that nano potassium titanate biological film / Ti-25Nb-6Zr-3Mo showed excellent stability and corrosion-resistant. The material is a better prospect for application asimplant material.

关 键 词：生物材料 医用β钛合金 纳米钛酸钾生物薄膜 表面改性 电化学腐蚀 

分 类 号：TB321[一般工业技术—材料科学与工程]