在Na2SiO3和NaAlO2为主成膜剂的硅铝复合电解液中,利用交流脉冲电源对AZ91D镁合金进行微弧氧化处理,研究主成膜剂含量的变化对微弧氧化过程及膜层特性的影响规律。利用扫描电镜（SEM）和膜层测厚仪分别研究了膜层的微观形貌和膜层厚度,通过电化学阻抗谱（EIS）测试膜层在3.5%NaCl中性溶液中的耐蚀性能。结果表明,随着主成膜剂含量的增加,微弧氧化过程中起弧电压和终止电压均呈下降的变化趋势,而膜层耐蚀性则基本呈先增大后降低的变化趋势,膜厚的变化趋势与其耐蚀性一致;Na2SiO3含量的变化对膜层内部致密层和外部疏松层的耐蚀性均有影响,而NaAlO2含量的变化则主要影响膜层内部致密层的耐蚀性;适量的主成膜剂含量是获得致密耐蚀膜层的关键。
参考文献
| [1] | J.E. Gray;B. Luan .Protective coatings on magnesium and its alloys-a critical review[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2002(1/2):88-113. |
| [2] | Yang KH;Ger MD;Hwu WH;Sung Y;Liu YC .Study of vanadium-based chemical conversion coating on the corrosion resistance of magnesium alloy[J].Materials Chemistry and Physics,2007(2/3):480-485. |
| [3] | WU Li-ping,ZHAO Jing-jing,XIE Yong-ping,YANG Zhong-dong.Progress of electroplating and electroless plating on magnesium alloy[J].中国有色金属学报（英文版）,2010(z2):630-637. |
| [4] | Yan Liu;Zhongling Wei;Fuwei Yang .Environmental friendly anodizing of AZ91D magnesium alloy in alkaline borate-benzoate electrolyte[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2011(22):6440-6446. |
| [5] | A. L. Yerokhin;X. Nie;A. Leyland;A. Matthews;S. J. Dowey .Plasma electrolysis for surface engineering[J].Surface & Coatings Technology,1999(2/3):73-93. |
| [6] | 王淑艳,夏永平,陆正萍,彭赞瑜,胡芮.电解液组分对AZ91D镁合金微弧氧化膜层耐蚀性的影响[J].中国表面工程,2011(05):38-44. |
| [7] | Comparison of electrochemical corrosion behaviour of MgO and ZrO_2 coatings on AM50 magnesium alloy formed by plasma electrolytic oxidation[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2009(10):2483. |
| [8] | P. Bala Srinivasan;C. Blawert;W. Dietzel .Dry sliding wear behaviour of plasma electrolytic oxidation coated AZ91 cast magnesium alloy[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2009(11/12):1241-1247. |
| [9] | Cakmak, E;Tekin, KC;Malayoglu, U;Shrestha, S .The effect of substrate composition on the electrochemical and mechanical properties of PEO coatings on Mg alloys[J].Surface & Coatings Technology,2010(8):1305-1313. |
| [10] | Tang, Y.;Zhao, X.;Jiang, K.;Chen, J.;Zuo, Y. .The influences of duty cycle on the bonding strength of AZ31B magnesium alloy by microarc oxidation treatment[J].Surface & Coatings Technology,2010(6):1789-1792. |
| [11] | Gnedenkov, SV;Khrisanfova, OA;Zavidnaya, AG;Sinebryukhov, SL;Egorkin, VS;Nistratova, MV;Yerokhin, A;Matthews, A .PEO coatings obtained on an Mg-Mn type alloy under unipolar and bipolar modes in silicate-containing electrolytes[J].Surface & Coatings Technology,2010(14):2316-2322. |
| [12] | R.F. Zhang;S.F. Zhang;S.W. Duo .Influence of phytic acid concentration on coating properties obtained by MAO treatment on magnesium alloys[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2009(18):8048-8053. |
| [13] | 郭锋,刘瑞霞,李鹏飞,刘亮.电解液中的稀土对AZ91D镁合金微弧氧化陶瓷层的影响[J].材料热处理学报,2011(02):134-138. |
| [14] | ZHAO Fang,LIAO Ai-di,ZHANG Rong-fa,ZHANG Shu-fang,WANG Hai-xia,SHI Xing-mei,LI Ming-jie,HE Xiang-ming.Effects of sodium tungstate on properties of micro-arc coatings on magnesium alloys[J].中国有色金属学报（英文版）,2010(z2):683-687. |
| [15] | Li Wang;Li Chen;Zongcheng Yan .Effect of potassium fluoride on structure and corrosion resistance of plasma electrolytic oxidation films formed on AZ31 magnesium alloy[J].Journal of Alloys and Compounds,2009(2):469-474. |
| [16] | 姜兆华,李爽,姚忠平,孙学通.电解液对微弧氧化陶瓷膜结构与耐蚀性的影响[J].材料科学与工艺,2006(05):460-462. |
| [17] | 陈显明,罗承萍,刘江文,李文芳.镁合金微弧氧化膜层形成过程探讨[J].中国表面工程,2006(05):14-18,21. |
| [18] | Hongping Duan;Chuanwei Yan;Fuhui Wang .Effect of electrolyte additives on performance of plasma electrolytic oxidation films formed on magnesium alloy AZ91D[J].Electrochimica Acta,2007(11):3785-3793. |
| [19] | 骆海贺,蔡启舟,魏伯康,余博,何剑,李定骏.（NaPO3）6对AZ91D镁合金微弧氧化陶瓷层电化学腐蚀特性的影响[J].物理化学学报,2008(03):481-486. |
| [20] | 张荣发,曲铁平,巢强花,聂新兵,王为.环保型电解质对镁合金氧化膜性能的影响[J].中国有色金属学报,2008(06):1027-1031. |
| [21] | 王虹斌;方志刚;蒋百灵.微弧氧化技术及其在海洋环境中的应用[M].北京:国防工业出版社,2010 |
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