10％H2SO4溶液作为电解液,采用恒电位的方式在纯钛的表面成功制备出阳极氧化膜.采用电化学的方法在3.5％NaCl溶液中研究了低电位下阳极氧化膜的I-t曲线、Tafel极化曲线、电化学阻抗谱以及Mott-Schottky曲线.结果表明:在确定的工艺参数下,可获得色彩丰富、表面平整、光滑的阳极氧化膜.I-t曲线显示氧化膜的形成是动态生长和溶解的过程;Tafel曲线和阻抗谱显示阳极氧化后的TA2纯钛具有更好的耐蚀性,且阳极氧化电压越高,耐蚀性越好;Mott-Schottky显示阳极氧化膜为n型半导体,且施主浓度随电位升高而减小,耐蚀性随之提高.
Anodic oxide films on pure titanium surface were prepared with potentiostatic method in 10％ sulfuric acid electrolyte.The chrono-amperometric curve,potentiodynamic polarization curve,electrochemical impedance spectroscopy and Mott-Schottky curve of the anodic oxide films were obtained using an electrochemical method in 3.5％ NaCl solution.The results show that colorful,fiat and smooth anodic oxide films are obtained in the experimental processing parameters.Chrono-amperometric curve shows that the formation of the oxide films is the process of dynamic growth and dissolution.The potentiodynamic polarization curves and electrochemical impedance spectra show that TA2 pure titanium has better corrosion resistance after anodizing,and the higher the anodic oxidation voltage,the better corrosion resistance.Mott-Schottky curves show that the anodic oxide film is an n-type semiconductor.The donor concentration decreases with increasing potential and the corrosion resistance increases.
参考文献
| [1] | D. Quintero;O. Galvis;J.A. Calderón;J.G. Casta?o;F. Echeverría.Effect of electrochemical parameters on the formation of anodic films on commercially pure titanium by plasma electrolytic oxidation[J].Surface & Coatings Technology,2014:1223-1231. |
| [2] | 刘莉;张鲲;熊辉辉;宁淑红;胡琪;董立新;陈辉.阳极氧化工艺对6061铝合金草酸氧化膜耐磨耐蚀性的影响[J].材料热处理学报,2015(11):225-232. |
| [3] | F. Rosalbino;D. Maccio;G. Scavino;A. Saccone.In vitro corrosion behaviour of Ti-Nb-Sn shape memory alloys in Ringer's physiological solution[J].Journal of Materials Science. Materials in Medicine,20124(4):865-871. |
| [4] | Fangxia Xie;Xinbo He;Shunli Cao;Min Mei;Xuanhui Qu.Influence of pore characteristics on microstructure, mechanical properties and corrosion resistance of selective laser sintered porous Ti-Mo alloys for biomedical applications[J].Electrochimica Acta,2013:121-129. |
| [5] | C. Vasilescu;S.I. Drob;E.I. Neacsu;J.C. Mirza Rosca.Surface analysis and corrosion resistance of a new titanium base alloy in simulated body fluids[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2012Dec.(Dec.):431-440. |
| [6] | Michael Teka Woldemedhin;Dierk Raabe;Achim Walter Hassel.Characterization of thin anodic oxides of Ti-Nb alloys by electrochemical impedance spectroscopy[J].Electrochimica Acta,2012:324-332. |
| [7] | Y.Bai;S.J. Li;F. Prima;Y.L. Hao;R. Yang.Electrochemical corrosion behavior of Ti-24Nb-4Zr-8Sn alloy in a simulated physiological environment[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,20128(8):4035-4040. |
| [8] | A. M. Fekry;Rabab M. El-Sherif.Electrochemical corrosion behavior of magnesium and titanium alloys in simulated body fluid[J].Electrochimica Acta,200928(28):7280-7285. |
| [9] | Kumar S;Narayanan TS.Corrosion behaviour of Ti-15Mo alloy for dental implant applications.[J].Journal of dentistry,20087(7):500-507. |
| [10] | Milo?ev, I.;Blejan, D.;Varvara, S.;Muresan, L.M..Effect of anodic oxidation on the corrosion behavior of Ti-based materials in simulated physiological solution[J].Journal of Applied Electrochemistry,20137(7):645-658. |
| [11] | Sergio Luiz de Assis;Stephan Wolynec;Isolda Costa.Corrosion characterization of titanium alloys by electrochemical techniques[J].Electrochimica Acta,20068/9(8/9):1815-1819. |
| [12] | Jun-Tao Wang;Wei-Wei Wanq;Cheng Wang;Zong-Qiang Mao.Corrosion behavior of three bipolar plate materials in simulated SPE water electrolysis environment[J].International journal of hydrogen energy,201217(17):12069-12073. |
| [13] | Dimitra Sazou;Kyriaki Saltidou;Michael Pagitsas.Understanding the effect of bromides on the stability of titanium oxide films based on a point defect model[J].Electrochimica Acta,2012:48-61. |
| [14] | 庄朋强;肖占文;朱向东;范红松;张兴栋.钽阳极氧化膜的半导体性研究[J].电子元件与材料,2011(8):35-39. |
| [15] | Hassiba Bouchemel;Abdelkader Benchettara.Corrosion Behavior of a New Ti-3Mo Alloy in Simulated Body Fluid for Biomedical Applications[J].Arabian journal for science and engineering,20141(1):139-146. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%