电化学沉积时间对碱预处理钛合金表面HA涂层的影响  

Effect of Electrochemical Deposition Time on HA Coatings Deposited on Alkali⁃Treated Titanium Alloys

作　　者：李明亮[1] 林兆擎 王淼[1] 陈中玉[1] 刘新宽[2] 杜见第[3] 刘平[2] LI Mingliang;LIN Zhaoqing;WANG Miao;CHEN Zhongyu;LIU Xinkuan;DU Jiandi;LIU Ping(Yancheng Polytechnic College,Yancheng 224001,Jiangsu,China;School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China;School of Materials Science and Engineering,Shanghai Jiaotong University,Shanghai 200030,China)

机构地区：[1]盐城工业职业技术学院,江苏盐城224001 [2]上海理工大学材料与化学学院,上海200093 [3]上海交通大学材料科学与工程学院,上海200030

出　　处：《矿冶工程》2024年第2期167-171,共5页Mining and Metallurgical Engineering

基　　金：江苏省苏北科技专项(SZ-YC2019064);盐城市激光增材制造高性能铝基复材工程技术研究中心资助;校级教科研跨界创新团队资助。

摘　　要：采用碱预处理钛合金表面再电化学沉积的方法,研究了电化学沉积时间对羟基磷灰石(HA)涂层物相、形貌、生物活性及其与钛合金基体间结合强度的影响。结果表明,碱预处理钛合金表面制备的电化学沉积涂层主要由片状HA相组成,电化学沉积时间对涂层物相组成没有影响,但会影响涂层厚度;沉积时间60 min时得到的HA涂层较致密,与基体的结合强度达17.85 MPa。各沉积时间下得到的HA涂层均具有较好的生物活性,在模拟体液(SBF)中,CO_(3)^(2-)置换HA中的PO_(4)^(3-)进入磷灰石中形成类骨磷灰石CHA,呈馒头状,直径7~8μm,且在SBF中浸泡3 d,CHA可铺满HA表面。Effects of electrochemical deposition time on the phase,morphology,bioactivity of hydroxyapatite(HA)coating and the bonding strength with the substrate were investigated adopting alkali⁃treatment of titanium alloy followed by electrochemical deposition.Results show that the electrochemically deposited coatings prepared on the surface of alkali⁃treated titanium alloy are composed of flake HA phases,and the electrochemical deposition time has no effect on the phase composition of the coatings,but will bring impact to the coating thickness.After 60 min deposition,the obtained HA coatings is very compacted and has the bonding strength with the substrate up to 17.85 MPa.It is shown that the HA coatings obtained after each deposition time have good bioactivity.In the simulated body fluids(SBF),CO_(3)^(2-)substitutes PO_(4)^(3-)in the HA into apatite to form steamed bun⁃shaped carbonated hydroxyapatite(CHA),with the diameter of 7-8μm.After being immersed in SBF for 3 days,the CHA can be spread all over the surface of HA.

关 键 词：钛合金 生物材料 表面改性 生物活性 电化学沉积 羟基磷灰石涂层 类骨磷灰石 

分 类 号：TG174.4[金属学及工艺—金属表面处理]