在含有丙三醇的硅酸盐体系中,通过微弧氧化法在AZ31B镁合金表面获得了细致均匀微孔的氧化膜.以SEM、电化学工作站和测厚仪为表征手段,利用单因素法分别考察了恒压模式下电压、频率、占空比对氧化膜结构、耐蚀性及厚度的影响.结果表明:随电压的增加,氧化膜的表面微孔尺寸和厚度均增大,但膜层耐蚀性能先增加后降低;随频率的增加,膜表面微孔尺寸减小,耐蚀性能增大,但频率改变对膜层的厚度影响较小;当占空比＞45％时,膜层的表面微孔尺寸及厚度有增大趋势,膜层表面出现击穿破坏而导致耐蚀性能降低.优化的电参数为:电压230.～260V,频率300～500 Hz,占空比30％～45％.
参考文献
| [1] | Hu, R.-G.;Zhang, S.;Bu, J.-F.;Lin, C.-J.;Song, G.-L. .Recent progress in corrosion protection of magnesium alloys by organic coatings[J].Progress in Organic Coatings: An International Review Journal,2012(2/3):129-141. |
| [2] | 亢海娟,李全安,周伟.镁合金的腐蚀特性与防护措施[J].腐蚀科学与防护技术,2012(06):513-516. |
| [3] | 王美娟,王日初,彭超群,冯艳,张纯.镁合金阳极氧化研究进展[J].腐蚀科学与防护技术,2012(06):508-512. |
| [4] | 郭泉忠,张伟,杜克勤,王荣.电化学阻抗谱研究负向电压对AZ31B镁合金微弧氧化陶瓷层致密性的影响[J].中国腐蚀与防护学报,2012(06):467-472. |
| [5] | Hwang, I.J.;Hwang, D.Y.;Ko, Y.G.;Shin, D.H. .Correlation between current frequency and electrochemical properties of Mg alloy coated by micro arc oxidation[J].Surface & Coatings Technology,2012(15):3360-3365. |
| [6] | 常林荣,曹发和,蔡景顺,刘文娟,张昭,张鉴清.交变方波电源参数对镁合金AZ91D微弧氧化的影响[J].中国有色金属学报（英文版）,2011(02):307-316. |
| [7] | 马颖,詹华,马跃洲,吕维玲,冯君艳,高唯.电参数对AZ91D镁合金微弧氧化膜层微观结构及耐蚀性的影响[J].中国有色金属学报,2010(08):1467-1473. |
| [8] | 王淑艳,夏永平,刘莉.C3H8O3含量对AZ91D镁合金微弧氧化过程及膜层特性的影响[J].中国腐蚀与防护学报,2013(03):235-240. |
| [9] | Feng Liu;Dayong Shan;Yingwei Song;En-Hou Han;Wei Ke .Corrosion behavior of the composite ceramic coating containing zirconium oxides on AM30 magnesium alloy by plasma electrolytic oxidation[J].Corrosion Science,2011(11):3845-3852. |
| [10] | Liu, F.;Shan, D.;Song, Y.;Han, E.-H. .Effect of additives on the properties of plasma electrolytic oxidation coatings formed on AM50 magnesium alloy in electrolytes containing K2ZrF6[J].Surface & Coatings Technology,2011(2/3):455-463. |
| [11] | Shunsuke Yagi;Kosuke Kuwabara;Yuko Fukuta;Kohei Kubota;Eiichiro Matsubara .Formation of self-repairing anodized film on ACM522 magnesium alloy by plasma electrolytic oxidation[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2013(Aug.):188-195. |
| [12] | Mandelli, A.;Bestetti, M.;Da Forno, A.;Lecis, N.;Trasatti, S.P.;Trueba, M. .A composite coating for corrosion protection of AM60B magnesium alloy[J].Surface & Coatings Technology,2011(19):4459-4465. |
| [13] | DING Jun,LIANG Jun,HU Li-tian,HAO Jing-cheng,XUE Qun-ji.Effects of sodium tungstate on characteristics of microarc oxidation coatings formed on magnesium alloy in silicate-KOH electrolyte[J].中国有色金属学会会刊（英文版）,2007(02):244-249. |
| [14] | Hongping Duan;Chuanwei Yan;Fuhui Wang .Growth process of plasma electrolytic oxidation films formed on magnesium alloy AZ91D in silicate solution[J].Electrochimica Acta,2007(15):5002-5009. |
| [15] | 乌迪,刘向东,吕凯,张雅萍,王晓军.丙三醇对镁合金微弧氧化过程及膜层的影响[J].材料保护,2009(02):1-3. |
| [16] | 郭洪飞,安茂忠,徐莘,霍慧彬.电流密度对镁合金微弧氧化过程及氧化陶瓷膜性能的影响[J].稀有金属材料与工程,2005(10):1554-1557. |
| [17] | 蒋百灵,刘东杰.制约微弧氧化技术应用开发的几个科学问题[J].中国有色金属学报,2011(10):2402-2407. |
| [18] | Xue-jun Cui;Chun-hai Liu;Rui-song Yang;Qing-shan Fu;Xiu-zhou Lin;Min Gong .Duplex-layered manganese phosphate conversion coating on AZ31 Mg alloy and its initial formation mechanism[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2013(Nov.):474-485. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%