摘要
采用高氯酸和冰醋酸体积比为1∶18的混合溶液,在电流密度1.05 A/cm^2、抛光间距20 mm和温度15°C的条件下对镍钛合金管电解抛光90 s。对比了抛光前后镍钛合金管外表面的形貌、粗糙度(Ra)、亲水性、耐蚀性和生物相容性。结果表明,电解抛光后镍钛合金表面平整、光亮,Ra=51.1 nm,水接触角为44.2°,在Hank’s模拟体液中的耐蚀性和生物兼容性均有改善。
Nickel–titanium alloy tube was electrolytically polished in a mixture of perchloric acid and glacial acetic acid with a volume ratio of 1:18 at current density 1.05 A/cm^2,anode-to-cathode distance 20 mm,and temperature 15°C for 90 s.The morphology,roughness,hydrophilicity,corrosion resistance,and biocompatibility of the exterior surface of the nickel–titanium alloy tube with and without being electrolytically polished were compared.The results showed that the electrolytically polished nickel–titanium alloy tube was smooth and bright with a surface roughness(Ra)of 51.1 nm,a water contact angle of 44.2°,improved corrosion resistance,and higher biocompatibility in Hank’s simulated body fluid.
作者
黄朝霞
柴明霞
李志永
赵鑫
张杰翔
HUANG Zhaoxia;CHAI Mingxia;LI Zhiyong;ZHAO Xin;ZHANG Jiexiang(School of Mechanical Engineering,Shandong University of Technology,Zibo 255049,China)
出处
《电镀与涂饰》
CAS
CSCD
北大核心
2020年第9期549-553,共5页
Electroplating & Finishing
基金
国家自然科学基金(51775321)
山东省重点研发计划(公益类)项目(2017GGX30116)。
关键词
镍钛合金
模拟体液
生物相容性
耐蚀性
亲水性
nickel–titanium alloy
simulated body fluid
biocompatibility
corrosion resistance
hydrophilicity
